17

我对 spring e mybatis 有很多问题。这是我的 spring 配置：我有相同的配置，并且 ComuneMapper.java 和 ComuneMapper.xml 留在同一个文件夹中。但是我有这个错误有人来帮助meeeee

    <?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:webflow="http://www.springframework.org/schema/webflow-config"
    xmlns:util="http://www.springframework.org/schema/util"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-2.5.xsd
        http://www.springframework.org/schema/webflow-config
        http://www.springframework.org/schema/webflow-config/spring-webflow-config-2.0.xsd
        http://www.springframework.org/schema/util
        http://www.springframework.org/schema/util/spring-util-2.0.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

    <context:annotation-config /> 

    <!-- Scans the classpath of this application for @Components to deploy as beans -->
    <context:component-scan
        base-package="com.aieap" />

    <!-- Configures the @Controller programming model -->
    <mvc:annotation-driven />


    <!-- Configurazione Spring MVC View Resolver -->
    <bean
        id="viewResolver"
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property
            name="viewClass"
            value="org.springframework.web.servlet.view.JstlView" />
        <property
            name="prefix"
            value="/jsp/" />
        <property
            name="suffix"
            value=".jsp" />
    </bean>

    <!-- Flow Handler Adapter -->
    <bean
        class="org.springframework.webflow.mvc.servlet.FlowHandlerAdapter">
        <property
            name="flowExecutor"
            ref="flowExecutor" />
    </bean>

    <!-- Flow Handler Mapping -->
    <bean
        class="org.springframework.webflow.mvc.servlet.FlowHandlerMapping">
        <property
            name="flowRegistry"
            ref="flowRegistry" />
    </bean>

    <!-- Flow Executor -->
    <webflow:flow-executor
        id="flowExecutor" />

    <!-- Flow Registry -->
    <webflow:flow-registry
        id="flowRegistry"
        flow-builder-services="flowBuilderServices">
        <!-- nonaut -->
        <webflow:flow-location
            id="home-nonaut"
            path="/WEB-INF/flows/nonaut/home-nonaut.xml" />
        <webflow:flow-location
            id="logout"
            path="/WEB-INF/flows/nonaut/logout.xml" />

        <!-- aut -->
        <webflow:flow-location
            id="aut/home-aut"
            path="/WEB-INF/flows/aut/home-aut.xml" />
        <webflow:flow-location
            id="aut/nuova-domanda"
            path="/WEB-INF/flows/aut/nuova-domanda.xml" />
        <webflow:flow-location
            id="aut/invia-domanda"
            path="/WEB-INF/flows/aut/invia-domanda.xml" />
        <webflow:flow-location
            id="aut/nuovo-operatore-rer"
            path="/WEB-INF/flows/aut/nuovo-operatore-rer.xml" />

    </webflow:flow-registry>

    <webflow:flow-builder-services
        id="flowBuilderServices"
        view-factory-creator="viewFactoryCreator" />

    <bean
        id="viewFactoryCreator"
        class="org.springframework.webflow.mvc.builder.MvcViewFactoryCreator">
        <property
            name="viewResolvers">
            <list>
                <ref
                    bean="viewResolver" />
            </list>
        </property>
        <property
            name="useSpringBeanBinding"
            value="true" />
    </bean>

    <import resource="jdbc-context.xml" />


</beans>

jdbc-context.xm：

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="
            http://www.springframework.org/schema/beans 
            http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
            http://www.springframework.org/schema/tx 
            http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
            http://www.springframework.org/schema/context
            http://www.springframework.org/schema/context/spring-context-3.0.xsd
            ">

    <context:property-placeholder
        location="/WEB-INF/db.properties" />

    <!-- Enable annotation style of managing transactions -->
    <tx:annotation-driven
        transaction-manager="transactionManager" />

    <!-- Declare a datasource that has pooling capabilities -->
    <bean
        id="dataSource"
        class="com.mchange.v2.c3p0.ComboPooledDataSource"
        destroy-method="close"
        p:driverClass="${jdbc.driver}"
        p:jdbcUrl="${jdbc.url}"
        p:user="${jdbc.username}"
        p:password="$jdbc.password}"
        p:acquireIncrement="10"
        p:idleConnectionTestPeriod="60"
        p:maxPoolSize="100"
        p:maxStatements="50"
        p:minPoolSize="10" />

    <!-- Declare a transaction manager -->
    <bean
        id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager"
        p:dataSource-ref="dataSource" />


    <!-- define the SqlSessionFactory, notice that configLocation is not needed when you use MapperFactoryBean -->
    <bean
        id="sqlSessionFactory"
        class="org.mybatis.spring.SqlSessionFactoryBean">
        <property
            name="dataSource"
            ref="dataSource" />
        <property
            name="configLocation"
            value="WEB-INF/mybatis/sqlmap-config.xml" />
    </bean>

    <!-- scan for mappers and will automatically scan the whole classpath for xmls -->
    <bean
        class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactory" ref="sqlSessionFactory" />
        <property name="basePackage" value="com.aieap.dao.mapper" />
    </bean>

</beans>

sqlmap-config.xml：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration
    PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
    "http://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>
    <settings>
        <!-- changes from the defaults -->
        <setting name="lazyLoadingEnabled" value="false" />
    </settings>
    <typeAliases>
        <typeAlias type="com.aieap.model.Comuni" alias="comuni"/>
    </typeAliases>
</configuration>

控制器：

package com.aieap.web.controller;

import java.util.ArrayList;
import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.apache.log4j.Logger;

import com.aieap.dao.mapper.ComuniMapper;
import com.aieap.model.Comuni;
import com.aieap.model.OperatoriRer;

@Controller
public class OperatoriRerController {

    @Autowired ComuniMapper comuniDao;


    private static final Logger logger = Logger.getLogger(OperatoriRerController.class);



     @RequestMapping("/aut/nuovo-operatore-rer")
        public ModelMap start() {

        Comuni comuni = comuniDao.selectByPrimaryKey(new Long(1));
        System.out.print(comuni);
        OperatoriRer op = new OperatoriRer();
        op.setNome("ciccio");
        op.setCognome("cappuccio");
        ModelMap model = new ModelMap();
        model.addAttribute("OperatoriRer",op);
        return model;
        }


     @RequestMapping("/aut/search-comune")
        public ModelMap searchcomune() {
        List<Comuni> comuniList = new ArrayList <Comuni>() ;        
        ModelMap model = new ModelMap();
        model.addAttribute("ComunuList",comuniList);
        return model;
        }
}

这是错误：

GRAVE: Servlet.service() for servlet [dispatch] in context with path [/aieap] threw exception [Request processing failed; nested exception is java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for com.aieap.dao.mapper.ComuniMapper.selectByPrimaryKey] with root cause
java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for com.aieap.dao.mapper.ComuniMapper.selectByPrimaryKey
    at org.apache.ibatis.session.Configuration$StrictMap.get(Configuration.java:593)
    at org.apache.ibatis.session.Configuration.getMappedStatement(Configuration.java:393)
    at org.apache.ibatis.binding.MapperMethod.setupCommandType(MapperMethod.java:160)
    at org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:48)
    at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:37)
    at $Proxy9.selectByPrimaryKey(Unknown Source)
    at com.aieap.web.controller.OperatoriRerController.start(OperatoriRerController.java:29)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:219)
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:746)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:687)
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:915)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:811)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:796)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:399)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:317)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:204)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:182)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:311)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)

请！！！谁能帮帮我，我绝望了！！！！！！！！！！！！！！！

我已经忘记了。这是 ComuniMapper.java

package com.aieap.dao.mapper;

import com.aieap.model.Comuni;
import com.aieap.model.ComuniExample;
import java.util.List;
import org.apache.ibatis.annotations.Param;

public interface ComuniMapper {

    int countByExample(ComuniExample example);
    int deleteByExample(ComuniExample example);
    int deleteByPrimaryKey(Long idComune);
    int insert(Comuni record);
    int insertSelective(Comuni record);
    List<Comuni> selectByExample(ComuniExample example);
    Comuni selectByPrimaryKey(Long idComune);

    /**
     * This method was generated by MyBatis Generator.
     * This method corresponds to the database table comuni
     *
     * @mbggenerated Tue Jan 08 16:52:16 CET 2013
     */
    int updateByExampleSelective(@Param("record") Comuni record, @Param("example") ComuniExample example);

    /**
     * This method was generated by MyBatis Generator.
     * This method corresponds to the database table comuni
     *
     * @mbggenerated Tue Jan 08 16:52:16 CET 2013
     */
    int updateByExample(@Param("record") Comuni record, @Param("example") ComuniExample example);

    /**
     * This method was generated by MyBatis Generator.
     * This method corresponds to the database table comuni
     *
     * @mbggenerated Tue Jan 08 16:52:16 CET 2013
     */
    int updateByPrimaryKeySelective(Comuni record);

    /**
     * This method was generated by MyBatis Generator.
     * This method corresponds to the database table comuni
     *
     * @mbggenerated Tue Jan 08 16:52:16 CET 2013
     */
    int updateByPrimaryKey(Comuni record);
}

结束这个 ComuniMapper.xml：

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.aieap.dao.mapper.ComuniMapper" >
  <resultMap id="BaseResultMap" type="com.aieap.model.Comuni" >
    <!--
      WARNING - @mbggenerated
      This element is automatically generated by MyBatis Generator, do not modify.
      This element was generated on Tue Jan 08 16:52:16 CET 2013.
    -->
    <id column="ID_COMUNE" property="idComune" jdbcType="BIGINT" />
    <result column="CODICE_ISTAT" property="codiceIstat" jdbcType="VARCHAR" />
    <result column="DESCRIZIONE" property="descrizione" jdbcType="VARCHAR" />
    <result column="CAP" property="cap" jdbcType="VARCHAR" />
    <result column="CODICE_PROVINCIA" property="codiceProvincia" jdbcType="BIGINT" />
    <result column="COMUNE_SIGLA" property="comuneSigla" jdbcType="VARCHAR" />
    <result column="COMUNE_CFIS" property="comuneCfis" jdbcType="VARCHAR" />
  </resultMap>
  <sql id="Example_Where_Clause" >
    <!--
      WARNING - @mbggenerated
      This element is automatically generated by MyBatis Generator, do not modify.
      This element was generated on Tue Jan 08 16:52:16 CET 2013.
    -->
    <where >
      <foreach collection="oredCriteria" item="criteria" separator="or" >
        <if test="criteria.valid" >
          <trim prefix="(" suffix=")" prefixOverrides="and" >
            <foreach collection="criteria.criteria" item="criterion" >
              <choose >
                <when test="criterion.noValue" >
                  and ${criterion.condition}
                </when>
                <when test="criterion.singleValue" >
                  and ${criterion.condition} #{criterion.value}
                </when>
                <when test="criterion.betweenValue" >
                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
                </when>
                <when test="criterion.listValue" >
                  and ${criterion.condition}
                  <foreach collection="criterion.value" item="listItem" open="(" close=")" separator="," >
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <sql id="Update_By_Example_Where_Clause" >
    <!--
      WARNING - @mbggenerated
      This element is automatically generated by MyBatis Generator, do not modify.
      This element was generated on Tue Jan 08 16:52:16 CET 2013.
    -->
    <where >
      <foreach collection="example.oredCriteria" item="criteria" separator="or" >
        <if test="criteria.valid" >
          <trim prefix="(" suffix=")" prefixOverrides="and" >
            <foreach collection="criteria.criteria" item="criterion" >
              <choose >
                <when test="criterion.noValue" >
                  and ${criterion.condition}
                </when>
                <when test="criterion.singleValue" >
                  and ${criterion.condition} #{criterion.value}
                </when>
                <when test="criterion.betweenValue" >
                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
                </when>
                <when test="criterion.listValue" >
                  and ${criterion.condition}
                  <foreach collection="criterion.value" item="listItem" open="(" close=")" separator="," >
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <sql id="Base_Column_List" >
    <!--
      WARNING - @mbggenerated
      This element is automatically generated by MyBatis Generator, do not modify.
      This element was generated on Tue Jan 08 16:52:16 CET 2013.
    -->
    ID_COMUNE, CODICE_ISTAT, DESCRIZIONE, CAP, CODICE_PROVINCIA, COMUNE_SIGLA, COMUNE_CFIS
  </sql>
  <select id="selectByExample" resultMap="BaseResultMap" parameterType="com.aieap.model.ComuniExample" >
    <!--
      WARNING - @mbggenerated
      This element is automatically generated by MyBatis Generator, do not modify.
      This element was generated on Tue Jan 08 16:52:16 CET 2013.
    -->
    select
    <if test="distinct" >
      distinct
    </if>
    <include refid="Base_Column_List" />
    from comuni
    <if test="_parameter != null" >
      <include refid="Example_Where_Clause" />
    </if>
    <if test="orderByClause != null" >
      order by ${orderByClause}
    </if>
  </select>
  <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Long" >
    <!--
      WARNING - @mbggenerated
      This element is automatically generated by MyBatis Generator, do not modify.
      This element was generated on Tue Jan 08 16:52:16 CET 2013.
    -->
    select 
    <include refid="Base_Column_List" />
    from comuni
    where ID_COMUNE = #{idComune,jdbcType=BIGINT}
  </select>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Long" >
    <!--
      WARNING - @mbggenerated
      This element is automatically generated by MyBatis Generator, do not modify.
      This element was generated on Tue Jan 08 16:52:16 CET 2013.
    -->
    delete from comuni
    where ID_COMUNE = #{idComune,jdbcType=BIGINT}
  </delete>
  <delete id="deleteByExample" parameterType="com.aieap.model.ComuniExample" >
    <!--
      WARNING - @mbggenerated
      This element is automatically generated by MyBatis Generator, do not modify.
      This element was generated on Tue Jan 08 16:52:16 CET 2013.
    -->
    delete from comuni
    <if test="_parameter != null" >
      <include refid="Example_Where_Clause" />
    </if>
  </delete>
  <insert id="insert" parameterType="com.aieap.model.Comuni" >
    <!--
      WARNING - @mbggenerated
      This element is automatically generated by MyBatis Generator, do not modify.
      This element was generated on Tue Jan 08 16:52:16 CET 2013.
    -->
    insert into comuni (ID_COMUNE, CODICE_ISTAT, DESCRIZIONE, 
      CAP, CODICE_PROVINCIA, COMUNE_SIGLA, 
      COMUNE_CFIS)
    values (#{idComune,jdbcType=BIGINT}, #{codiceIstat,jdbcType=VARCHAR}, #{descrizione,jdbcType=VARCHAR}, 
      #{cap,jdbcType=VARCHAR}, #{codiceProvincia,jdbcType=BIGINT}, #{comuneSigla,jdbcType=VARCHAR}, 
      #{comuneCfis,jdbcType=VARCHAR})
  </insert>
  <insert id="insertSelective" parameterType="com.aieap.model.Comuni" >
    <!--
      WARNING - @mbggenerated
      This element is automatically generated by MyBatis Generator, do not modify.
      This element was generated on Tue Jan 08 16:52:16 CET 2013.
    -->
    insert into comuni
    <trim prefix="(" suffix=")" suffixOverrides="," >
      <if test="idComune != null" >
        ID_COMUNE,
      </if>
      <if test="codiceIstat != null" >
        CODICE_ISTAT,
      </if>
      <if test="descrizione != null" >
        DESCRIZIONE,
      </if>
      <if test="cap != null" >
        CAP,
      </if>
      <if test="codiceProvincia != null" >
        CODICE_PROVINCIA,
      </if>
      <if test="comuneSigla != null" >
        COMUNE_SIGLA,
      </if>
      <if test="comuneCfis != null" >
        COMUNE_CFIS,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides="," >
      <if test="idComune != null" >
        #{idComune,jdbcType=BIGINT},
      </if>
      <if test="codiceIstat != null" >
        #{codiceIstat,jdbcType=VARCHAR},
      </if>
      <if test="descrizione != null" >
        #{descrizione,jdbcType=VARCHAR},
      </if>
      <if test="cap != null" >
        #{cap,jdbcType=VARCHAR},
      </if>
      <if test="codiceProvincia != null" >
        #{codiceProvincia,jdbcType=BIGINT},
      </if>
      <if test="comuneSigla != null" >
        #{comuneSigla,jdbcType=VARCHAR},
      </if>
      <if test="comuneCfis != null" >
        #{comuneCfis,jdbcType=VARCHAR},
      </if>
    </trim>
  </insert>
  <select id="countByExample" parameterType="com.aieap.model.ComuniExample" resultType="java.lang.Integer" >
    <!--
      WARNING - @mbggenerated
      This element is automatically generated by MyBatis Generator, do not modify.
      This element was generated on Tue Jan 08 16:52:16 CET 2013.
    -->
    select count(*) from comuni
    <if test="_parameter != null" >
      <include refid="Example_Where_Clause" />
    </if>
  </select>
  <update id="updateByExampleSelective" parameterType="map" >
    <!--
      WARNING - @mbggenerated
      This element is automatically generated by MyBatis Generator, do not modify.
      This element was generated on Tue Jan 08 16:52:16 CET 2013.
    -->
    update comuni
    <set >
      <if test="record.idComune != null" >
        ID_COMUNE = #{record.idComune,jdbcType=BIGINT},
      </if>
      <if test="record.codiceIstat != null" >
        CODICE_ISTAT = #{record.codiceIstat,jdbcType=VARCHAR},
      </if>
      <if test="record.descrizione != null" >
        DESCRIZIONE = #{record.descrizione,jdbcType=VARCHAR},
      </if>
      <if test="record.cap != null" >
        CAP = #{record.cap,jdbcType=VARCHAR},
      </if>
      <if test="record.codiceProvincia != null" >
        CODICE_PROVINCIA = #{record.codiceProvincia,jdbcType=BIGINT},
      </if>
      <if test="record.comuneSigla != null" >
        COMUNE_SIGLA = #{record.comuneSigla,jdbcType=VARCHAR},
      </if>
      <if test="record.comuneCfis != null" >
        COMUNE_CFIS = #{record.comuneCfis,jdbcType=VARCHAR},
      </if>
    </set>
    <if test="_parameter != null" >
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByExample" parameterType="map" >
    <!--
      WARNING - @mbggenerated
      This element is automatically generated by MyBatis Generator, do not modify.
      This element was generated on Tue Jan 08 16:52:16 CET 2013.
    -->
    update comuni
    set ID_COMUNE = #{record.idComune,jdbcType=BIGINT},
      CODICE_ISTAT = #{record.codiceIstat,jdbcType=VARCHAR},
      DESCRIZIONE = #{record.descrizione,jdbcType=VARCHAR},
      CAP = #{record.cap,jdbcType=VARCHAR},
      CODICE_PROVINCIA = #{record.codiceProvincia,jdbcType=BIGINT},
      COMUNE_SIGLA = #{record.comuneSigla,jdbcType=VARCHAR},
      COMUNE_CFIS = #{record.comuneCfis,jdbcType=VARCHAR}
    <if test="_parameter != null" >
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByPrimaryKeySelective" parameterType="com.aieap.model.Comuni" >
    <!--
      WARNING - @mbggenerated
      This element is automatically generated by MyBatis Generator, do not modify.
      This element was generated on Tue Jan 08 16:52:16 CET 2013.
    -->
    update comuni
    <set >
      <if test="codiceIstat != null" >
        CODICE_ISTAT = #{codiceIstat,jdbcType=VARCHAR},
      </if>
      <if test="descrizione != null" >
        DESCRIZIONE = #{descrizione,jdbcType=VARCHAR},
      </if>
      <if test="cap != null" >
        CAP = #{cap,jdbcType=VARCHAR},
      </if>
      <if test="codiceProvincia != null" >
        CODICE_PROVINCIA = #{codiceProvincia,jdbcType=BIGINT},
      </if>
      <if test="comuneSigla != null" >
        COMUNE_SIGLA = #{comuneSigla,jdbcType=VARCHAR},
      </if>
      <if test="comuneCfis != null" >
        COMUNE_CFIS = #{comuneCfis,jdbcType=VARCHAR},
      </if>
    </set>
    where ID_COMUNE = #{idComune,jdbcType=BIGINT}
  </update>
  <update id="updateByPrimaryKey" parameterType="com.aieap.model.Comuni" >
    <!--
      WARNING - @mbggenerated
      This element is automatically generated by MyBatis Generator, do not modify.
      This element was generated on Tue Jan 08 16:52:16 CET 2013.
    -->
    update comuni
    set CODICE_ISTAT = #{codiceIstat,jdbcType=VARCHAR},
      DESCRIZIONE = #{descrizione,jdbcType=VARCHAR},
      CAP = #{cap,jdbcType=VARCHAR},
      CODICE_PROVINCIA = #{codiceProvincia,jdbcType=BIGINT},
      COMUNE_SIGLA = #{comuneSigla,jdbcType=VARCHAR},
      COMUNE_CFIS = #{comuneCfis,jdbcType=VARCHAR}
    where ID_COMUNE = #{idComune,jdbcType=BIGINT}
  </update>
</mapper>
4

12 回答 12

14

Hi this problem usually is connected to mapper locations. So try to set the mapperLocation property in your SqlSessionFactory bean:

<property name="mapperLocations" 
value="classpath*:pathWhereYouHaveMapper/*Mapper.xml" />

Hope it help!

于 2013-04-05T10:55:10.280 回答
13

可能有几个原因...！

  • -> SQL 语法（可能单个小查询在选择末尾有一个额外的“，”）

  • -> 类路径问题，无法解析 jar 依赖项

  • -> 这也可能是由于文件编码问题或“*Mapper.xml”文件中嵌入的非法 xml 字符。（所以要小心你的编辑……！）

最重要的是，您应该使用相同的名称。

  • 接口 = xxx.yyy.mappers.SettingMapper.class
  • 映射器文件 = /xxx/yyy/mappers/SettingMapper.xml
  • 映射器命名空间 = xxx.yyy.mappers.SettingMapper
于 2013-10-03T13:24:41.857 回答
9

这通常意味着 mybatis 找不到你引用的映射。可能你忘记将 *Mapper.xml 文件添加到 mybatis -config.xml（这是 MyBatis 的标准配置文件）

<mappers>
  <mapper resource="org/mybatis/builder/AuthorMapper.xml"/>
</mappers>

在文档http://mybatis.github.io/mybatis-3/configuration.html#mappers中查看更多信息

于 2013-10-21T09:01:03.663 回答
3

就我而言，发生的事情是映射 xml 文件中我的方法名称中有一个 TYPO 。当我更改了 DAO 名称时，我忘记在 xml 中进行更改，它可能对其他人有帮助。

于 2015-05-08T19:53:44.683 回答
2

除了其他答案，您还必须

检查重复的方法名称

这个错误最后出现在日志中。

IllegalArgumentException: Mapped Statements collection does not contain value

忽略上述消息，只需向上移动日志并在日志中查找第一条错误消息。我得到的第一个错误是，

ERROR [main] mapper.MapperFactoryBean (MapperFactoryBean.java:83) - Error while adding the mapper 'interface com.xyz.mappers.UserMapper' to configuration.
java.lang.IllegalArgumentException: Mapped Statements collection already contains value for com.xyz.mappers.UserMapper.getAllUserDetails

该错误清楚地指出，该方法getAllUserDetails已存在于UserMapper接口中（具有不同数量的参数）。复制方法名称也会引发此错误。（复制粘贴代码的惩罚）：P

于 2016-02-23T05:47:52.240 回答
1

在 mapper.xml 中重复id也会引发此类异常。希望这可以帮助。

于 2015-06-28T01:55:50.303 回答
1

我也遇到了这个问题。除了上述答案的可能性之外，我还尝试使用这种解决问题的方法：

方法名称应该在daoand中相同mapper.xml，在我的情况下方法名称不一样。所以你必须确定它们是一样的。

祝你好运！

于 2016-03-22T10:59:15.160 回答
1

mybatis-config.xml您可以在文件中注册您的映射器

<configuration>
    <properties resource="db.dev.properties">
     ...
    </properties>

    <typeHandlers>
        <package name="com.project.model.typehandlers"/>
    </typeHandlers>

    <environments default="development">
     ...
    </environments>

    <mappers>
      <mapper resource="com/project/model/xml/SomeMapper.xml"/>
      // other mapper here
    </mappers>
    ...
</configuration>
于 2019-03-27T14:21:18.287 回答
0

我和你一样使用mybatis。你的代码看起来不错。即使我不确定类型映射是否存在问题。尝试以下两个技巧来解决您的问题：

  1. 将 java 类型更改为 mybtis 别名 a)“java.lang.Long”->“long”，b)“com.aieap.model.Comuni”->“comuni”

  2. 尝试将别名而不是 XML 映射 @org.apache.ibatis.type.Alias("comuni") 添加到 com.aieap.model.Comuni，删除 xml typeAlias，将 spring 配置添加到您的 org.mybatis.spring.SqlSessionFactoryBean：

祝你好运，马丁

于 2013-01-08T20:51:46.573 回答
0

我有类似的问题。然后我发现所有在 mapper.xml 上定义了查询映射的请求都有相同的错误。

这可能是因为 WAR 构建不当或服务器部署不当。无论如何，我删除了那个 WAR 文件并再次重新部署，它成功了！

于 2015-10-24T12:48:07.563 回答
0

我也遇到了这个异常。在我的情况下，映射器 xml 文件存在于类路径中包含的 JAR 中，但 MapperScannerConfigurer 不知何故找不到它。我是通过阅读日志才知道这一点的。您应该阅读日志并检查以下格式的行以了解是否找到任何映射器。我必须给出它的根路径，之后它找到了我的映射器。

PathMatchingResourcePatternResolver:423 - Resolved location pattern [classpath*:*.xml] to resources [URL [jar:file:/home/user/src/tomcat8/webapps/example/WEB-INF/lib/ExampleDao-1.0.0-SNAPSHOT.jar!/TestMapper.xml]]
于 2015-12-27T12:23:43.040 回答
0

mybatis.config检查您是否已在属性文件中映射。

在 application.properties 文件中添加这一行。

mybatis.config=classpath:mybatis-config.xml
于 2018-09-19T05:46:47.117 回答