postgresql - 使用 Maven Mojo sql:execute 时出错

Question

TL;DR 版本：我希望能够使用 Maven Mojo SQL 插件通过mvn命令行随意创建/删除我的数据库模式中的任何给定表（或为这些表加载数据）。如何？

我是一名长期的 Java 开发人员，但在大多数情况下，我一直生活在一个ant基于 Java 的世界中。我喜欢的力量和明确性ant，以及它给我对一切的控制。但是，在我的新工作中，有一种使用maven. 所以我决定使用我在家里做的一个项目来学习它。

ant我在另一个个人项目中设置的一件事是能够从命令行完全设置和拆除我的 Postgres 数据库。我可以单独或共同对任何我喜欢的表、序列和集成测试数据进行切片和切块。当然，这意味着我有大约数百万个ant目标，但效果很好。我喜欢这个; 多年来，它对我很有帮助。

在周末研究如何在 Maven 中完成此任务时，我发现了Mojo SQL Maven 插件。在查看了使用页面（我松散地使用该术语，因为它实际上只是一个没有解释的半示例）和示例页面之后，我能够对我的pom.xml文件进行一些更改。我在示例 (postgressql) 中修正了一些明显的拼写错误，并引用了PostgreSQL JDBC 页面以确保我的 JDBC 连接字符串正确。我将在pom.xml下面粘贴所有（修改以保护有罪者）：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.mycompany.myapp</groupId>
    <artifactId>myapp</artifactId>
    <packaging>jar</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>myapp</name>
    <url>http://maven.apache.org</url>

    <repositories>
        <repository>
            <id>JBoss</id>
            <url>https://repository.jboss.org/nexus/content/groups/public/</url>
        </repository>
    </repositories>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.10</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>4.0.0.CR7</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>sql-maven-plugin</artifactId>
                <version>1.5</version>

                <dependencies>
                    <dependency>
                        <groupId>postgresql</groupId>
                        <artifactId>postgresql</artifactId>
                        <version>8.3-606.jdbc4</version>
                    </dependency>
                </dependencies>

                <configuration>
                    <driver>org.postgresql.Driver</driver>
                    <url>jdbc:postgresql://localhost:5432/myapp</url>
                    <settingsKey>myapp</settingsKey>
                    <!--all executions are ignored if -Dmaven.test.skip=true-->
                    <skip>${maven.test.skip}</skip>
                </configuration>

                <executions>
                    <execution>
                        <id>drop-db-before-test-if-any</id>
                        <phase>process-test-resources</phase>
                        <goals>
                            <goal>execute</goal>
                        </goals>
                        <configuration>
                            <!-- need another database to drop the targeted one -->
                            <url>jdbc:postgresql://localhost:5432/template1</url>
                            <autocommit>true</autocommit>
                            <sqlCommand>drop database myapp</sqlCommand>
                            <!-- ignore error when database is not avaiable -->
                            <onError>continue</onError>
                        </configuration>
                    </execution>

                    <execution>
                        <id>create-db</id>
                        <phase>process-test-resources</phase>
                        <goals>
                            <goal>execute</goal>
                        </goals>
                        <configuration>
                            <url>jdbc:postgresql://localhost:5432/template1</url>
                            <!-- no transaction -->
                            <autocommit>true</autocommit>
                            <sqlCommand>create database myapp</sqlCommand>
                        </configuration>
                    </execution>

                    <execution>
                        <id>create-schema</id>
                        <phase>process-test-resources</phase>
                        <goals>
                            <goal>execute</goal>
                        </goals>
                        <configuration>
                            <autocommit>true</autocommit>
                            <srcFiles>
                                <srcFile>src/main/sql/create_person.sql</srcFile>
                            </srcFiles>
                        </configuration>
                    </execution>

                    <execution>
                        <id>create-data</id>
                        <phase>process-test-resources</phase>
                        <goals>
                            <goal>execute</goal>
                        </goals>
                        <configuration>
                            <orderFile>ascending</orderFile>
                            <fileset>
                                <basedir>${basedir}</basedir>
                                <includes>
                                    <include>src/test/sql/person_data.sql</include>
                                </includes>
                            </fileset>
                        </configuration>
                    </execution>

                    <!-- drop db after test -->
                    <execution>
                        <id>drop-db-after-test</id>
                        <phase>test</phase>
                        <goals>
                            <goal>execute</goal>
                        </goals>
                        <configuration>
                            <url>jdbc:postgresql://localhost:5432/template1</url>
                            <autocommit>true</autocommit>
                            <sqlCommand>drop database myapp</sqlCommand>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

现在，由于我还没有创建数据库，所以它不会出现在\lPG 命令行中：

[mike@mike myapp]$ psql template1
Welcome to psql 8.3.5, the PostgreSQL interactive terminal.

Type:  \copyright for distribution terms
       \h for help with SQL commands
       \? for help with psql commands
       \g or terminate with semicolon to execute query
       \q to quit

template1=# \l
        List of databases
   Name    |  Owner   | Encoding 
-----------+----------+----------
 postgres  | postgres | UTF8
 template0 | postgres | UTF8
 template1 | postgres | UTF8
(3 rows)

因此，当我运行时mvn sql:execute，我希望我的数据库能够被创建......或者至少不会在drop-db-before-test-if-any任务上失败，因为它被设置为在出错时继续。但是当然：

[mike@mike myapp]$ mvn sql:execute
[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building myapp 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- sql-maven-plugin:1.5:execute (default-cli) @ myapp ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.667s
[INFO] Finished at: Mon Dec 05 20:22:17 CST 2011
[INFO] Final Memory: 3M/81M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:sql-maven-plugin:1.5:execute (default-cli) on project myapp: FATAL: database "myapp" does not exist -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

最后一行提到的错误页面没有帮助；它只是告诉我是插件导致了错误，而不是 Maven 本身。

所以让我们用-X开关运行它。我将发布错误中有趣的部分：

[ERROR] Failed to execute goal org.codehaus.mojo:sql-maven-plugin:1.5:execute (default-cli) on project myapp: FATAL: database "myapp" does not exist -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.codehaus.mojo:sql-maven-plugin:1.5:execute (default-cli) on project myapp: FATAL: database "myapp" does not exist
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:217)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
    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.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.apache.maven.plugin.MojoExecutionException: FATAL: database "myapp" does not exist
    at org.codehaus.mojo.sql.SqlExecMojo.execute(SqlExecMojo.java:618)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
    ... 19 more
Caused by: org.postgresql.util.PSQLException: FATAL: database "myapp" does not exist
    at org.postgresql.core.v3.ConnectionFactoryImpl.readStartupMessages(ConnectionFactoryImpl.java:444)
    at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:99)
    at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:66)
    at org.postgresql.jdbc2.AbstractJdbc2Connection.<init>(AbstractJdbc2Connection.java:124)
    at org.postgresql.jdbc3.AbstractJdbc3Connection.<init>(AbstractJdbc3Connection.java:30)
    at org.postgresql.jdbc4.AbstractJdbc4Connection.<init>(AbstractJdbc4Connection.java:29)
    at org.postgresql.jdbc4.Jdbc4Connection.<init>(Jdbc4Connection.java:24)
    at org.postgresql.Driver.makeConnection(Driver.java:386)
    at org.postgresql.Driver.connect(Driver.java:260)
    at org.codehaus.mojo.sql.SqlExecMojo.getConnection(SqlExecMojo.java:899)
    at org.codehaus.mojo.sql.SqlExecMojo.execute(SqlExecMojo.java:612)
    ... 21 more

但是，但是，但是…… <onError>continue</onError>！

所以，对于问题：

我究竟做错了什么？是我的期望，还是我的代码？
你会注意到我有一个create-person.sql文件。我从示例中知道我可以在那里有多个文件，例如create-address.sql. 但是在中ant，我有能力address从表中单独创建person表，只要我执行 ant 任务时牢记参照完整性的顺序。有这样的可能maven吗？如果是这样，怎么做？

抱歉冗长，并提前感谢您的帮助。

score 4 · Accepted Answer

未能执行目标 org.codehaus.mojo:sql-maven-plugin:1.5:execute (default-cli)

default-cliexecutionId是从命令行调用插件时的特殊情况。看到这个。

您已将所有 sql 插件执行绑定到 maven 生命周期阶段，但您正尝试直接调用插件。

mvn test应该管用。

这是一个相关的 SO 讨论。

postgresql - 使用 Maven Mojo sql:execute 时出错

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