我刚开始学习 Virgo Web Server。我正在尝试在 Spring MVC 应用程序中使用 Jakcson JSON。在这个阶段我不能得到一个 GET 请求序列化的对象。服务器返回“406 Not Acceptable”：
The resource identified by this request is only capable of generating responses with characteristics not acceptable according to the request "accept" headers ().
使用 Rome 和 JAXB2 时也会出现同样的问题。
这是项目配置文件和代码：
片段 pom.xml：
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>com.springsource.org.codehaus.jackson</artifactId>
<version>1.0.0</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>com.springsource.org.codehaus.jackson.mapper</artifactId>
<version>1.0.0</version>
</dependency>
清单文件
Manifest-Version: 1.0
Import-Bundle: com.springsource.org.apache.taglibs.standard;version="[
1.1.2,1.3)",com.springsource.org.codehaus.jackson;version="[1.0.0,1.0
.0]",com.springsource.org.codehaus.jackson.mapper;version="[1.0.0,1.0
.0]"
Bundle-Version: 2.3.0
Tool: Bundlor 1.0.0.RELEASE
Bundle-Name: GreenPages Web
Import-Library: org.springframework.spring;version="[3.0, 3.1)"
Bundle-ManifestVersion: 2
Bundle-SymbolicName: greenpages.web
Web-ContextPath: greenpages
Import-Package: javax.servlet.jsp.jstl.core;version="[1.1.2,1.2.0)",ja
vax.sql,org.apache.commons.dbcp,org.eclipse.virgo.web.dm;version="[2.
0.0, 3.0.0)",org.springframework.core.io;version="[3.0.0.RELEASE,3.1.
0)",org.springframework.stereotype;version="[3.0.0.RELEASE,3.1.0)",or
g.springframework.ui;version="[3.0.0.RELEASE,3.1.0)",org.springframew
ork.web.bind.annotation;version="[3.0.0.RELEASE,3.1.0)",org.springfra
mework.web.servlet.mvc.annotation;version="[3.0.0.RELEASE,3.1.0)",org
.springframework.web.servlet.view;version="[3.0.0.RELEASE,3.1.0)"
web.xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
<welcome-file-list>
<welcome-file>/WEB-INF/pages/index.jsp</welcome-file>
</welcome-file-list>
<!-- CONFIGURE A PARENT APPLICATION CONTEXT -->
<context-param>
<param-name>contextClass</param-name>
<param-value>org.eclipse.virgo.web.dm.ServerOsgiBundleXmlWebApplicationContext</param-value>
</context-param>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- DISPATCHER SERVLET CONFIG -->
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>*.htm</url-pattern>
</servlet-mapping>
</web-app>
调度程序-servlet.xml
<?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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
<context:component-scan base-package="greenpages.web"/>
<!-- Configures the @Controller programming model -->
<mvc:annotation-driven />
<bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"/>
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/pages/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
GreenPagesController.java
package greenpages.web;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
public class GreenPagesController {
@RequestMapping("/home.htm")
public void home() {
}
// MappingJacksonHttpMessageConverter (requires Jackson on the classpath - particularly useful for serving JavaScript clients that expect to work with JSON)
@RequestMapping(value="/json.htm", method=RequestMethod.POST)
public @ResponseBody String readJson(@RequestBody JavaBean bean) {
return "Read from JSON " + bean;
}
@RequestMapping(value="/json.htm", method=RequestMethod.GET)
public @ResponseBody Object writeJson() {
return new Object();
}
}
索引.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Simple jsp page</title>
<script type="text/javascript" src="/greenpages/scripts/jquery-1.4.4.min.js"></script>
<script type="text/javascript">
$.getJSON("json.htm", function(message) {
console.log(message);
});
</script>
</head>
<body>
<form action="test.htm" method="get">
<input type="text" name="name">
<input type="submit">
</form>
</body>
</html>
AJAX 请求http://localhost:8080/greenpages/json.htm：来自 Firebug 的请求标头：
GET /greenpages/json.htm HTTP/1.1
Host: localhost:8080
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.12) Gecko/20101026 Firefox/3.6.12
Accept: application/json, text/javascript, */*; q=0.01
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
X-Requested-With: XMLHttpRequest
Referer: http://localhost:8080/greenpages/
Cookie: JSESSIONID=18000E4E096D7978F61F5D1E8105B784; JSESSIONID=35FB0925786699EC587A1B64F30517AD
响应标头：
HTTP/1.1 406 Not Acceptable
Server: Apache-Coyote/1.1
Content-Type: text/html;charset=utf-8
Content-Length: 1070
Date: Tue, 07 Dec 2010 11:15:58 GMT
可能是什么问题？