org.apache.ibatis.binding.BindingException：无效的绑定语句（未找到）：db.UserMapper.xxx

Question

运行 DROPWIZARD 应用程序

时遇到异常

错误[2016-12-30 04:36:34,735] io.dropwizard.jersey.errors.LoggingExceptionMapper：处理请求时出错：6813de3aa499e307 ！ org.apache.ibatis.binding.BindingException：无效的绑定语句（未找到）：db.UserMapper.

@Path("/user/{username}")
 public class ExampleResource {

 private final SqlSessionFactory sessionFactory;

    public ExampleResource(SqlSessionFactory sessionFactory) {
        this.sessionFactory = sessionFactory;
    }

    @GET
    public User getUser(@PathParam("username") String username) {

        try (SqlSession session = sessionFactory.openSession()) 
        {
           UserMapper users = session.getMapper(UserMapper.class);
            //session.getConfiguration().addMapper(UserMapper.class);
            //UserMapper users = session.getMapper(UserMapper.class);
            return users.findByUsername(username);
        }

    }
}

UserMapper.xml

<mapper namespace="db.UserMapper" class="db.UserMapper">
<select id="findByUsername" resultType="User">
<![CDATA[
    select username,email
    from user
    where username = #{username}
]]>
</select>

<resultMap id="User" type="core.User">
    <id column="username" property="username" />
    <result column="email" property="email" />
</resultMap>

<insert id="addUser">
<![CDATA[
    insert into user (username, email)
    values (#{User.username}, #{User.email})
]]>
</insert>

user mapper.java

public interface UserMapper {

 User findByUsername(@Param("username") String username);

    void addUser(@Param("user") User user);
}

配置类：

@Valid
@NotNull    

private DataSourceFactory datasourceFactory = new DataSourceFactory();

@JsonProperty("database")
public DataSourceFactory getDataSourceFactory() {
        return this.datasourceFactory;
    }
public void setDatabase(DataSourceFactory database) {
    this.datasourceFactory = database;
}

Answer 1

当我们在 main class 中使用带有 dropwizard 的 mybatis 时，我们初始化 mybatisbundle，到时候提供你的mapperclass所在的包名。 在下面的代码中突出显示。

private final MybatisBundle<TestDropWizardConfiguration> mybatisBundle = new MybatisBundle<TestDropWizardConfiguration>("**com.example.helloworld**") {
    @Override
    public DataSourceFactory getDataSourceFactory(TestDropWizardConfiguration configuration) {
        return configuration.getDataSourceFactory();
    }
};

Answer 2

我的问题是spring没有找到mapper.xml，但是带@Test可以找到。我的 XXXmapper.xml 和 XXXXmapper.java 在同一个位置 (src/main/java/..../)。我将所有 XXXmapper.xml 移动到“src/main/resources/mapper”，并在 <bean id="sqlSessionFactory>.
中添加 <property name="mapperLocations" value="classpath:mapper/*.xml" /> 那就可以了！

或许您可以从 Google 搜索 "how many methods configure the XXXmapper.xml about mybatis" 。希望对你有帮助:-)

org.apache.ibatis.binding.BindingException：无效的绑定语句（未找到）：db.UserMapper.xxx

org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): db.UserMapper.xxx

java

xml

orm

mybatis

dropwizard