Question

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

我是一名长期的Java开发人员，但在大多数情况下，我一直生活在基于ant的世界。我喜欢ant的力量和显而易见性，以及它为我提供的控制。但是，在我的新工作中，推动使用maven。因此，我决定使用我在家工作的项目来学习它。

我在不同的个人项目中设置的一个功能是能够在命令行上从ant完全设置和拆除Postgres数据库。我可以单独或一致地对任何表格，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ant个目标，但效果非常好。我喜欢这个;多年来它一直很好用。

在研究如何在周末在Maven完成这项任务时，我找到了Mojo SQL Maven Plugin。在看了usage page（我用松散的术语，因为它实际上只是一个没有解释的半示例）和example page之后，我能够想出一些更改了我的pom.xml文件。我在示例（postgressql）中修复了一些明显的拼写错误，并引用了PostgreSQL JDBC page以确保我的JDBC连接字符串正确。我将粘贴以下所有pom.xml（经过修改以保护有罪）：

<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，因此它不会出现在PG命令行的\l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mvn sql:execute时，我希望我的数据库被创建...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;它只是告诉我插件导致了错误，而不是Maven本身。

因此，让我们使用-X开关运行它。我将发布错误的有趣部分：

[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...... <onError>continue</onError>！

所以，对于问题：

我做错了什么？这是我的期望，还是我的代码？
您会注意到我有create-person.sql个文件。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ant中，我能够独立于address表创建person表，只要我执行ant任务时记住参照完整性的顺序。 maven是可能的吗？如果是这样，怎么样？

对于详细程度感到抱歉，并提前感谢您的帮助。

Answer 1

无法执行目标org.codehaus.mojo：sql-maven-plugin：1.5：执行的 （缺省CLI）

从命令行调用插件时，
default-cli是特殊的executionId。请参阅this。

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

mvn test应该有用。

Here是一个相关的SO讨论。

使用Maven Mojo sql的错误：执行

1 个答案: