小编use*_*925的帖子

如何使用Jersey API或任何其他jax-rs API在jax-rs中使用@HEAD？请给我样品.

在下面的代码方法doService1()更新正确的SQL但doService2()sql有一些问题,但是当我调用doService()它必须提交doService1()更新到DB,即使doService2()有一个sql exception因为doService2() 有一个REQUIRES_NEW Propagation类型,但当我doService1()没有这个更新不提交数据库..

@Service public class DbClass {

      static Logger log = Logger.getLogger(
              DbClass.class.getName());

@Autowired
private DataSource dataSource;

@Transactional(propagation=Propagation.REQUIRED)
public void doService(){
    doService1();
    doService2();
}

@Transactional(propagation=Propagation.REQUIRED)
public void doService1(){
    JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);
    String sql = "  update BATCHJOBSTATUS set PROCESSINGDATE = '20130322'  " ;
    int rowCount1 =  jdbcTemplate.update(sql);
    System.out.println(" rowCount1 >" + rowCount1);
}

@Transactional(propagation=Propagation.REQUIRES_NEW)
public void doService2(){
    JdbcTemplate jdbcTemplate …

我在MyBatis中尝试了以下if子句，但出现以下异常，请在这里帮助我确定问题。

public class Student{

private Integer studId;
private String name;
private String email;
private Date dob;
}

制图

<select id="searchStudent" parameterType="hashmap" resultMap="StudentResult">
    <![CDATA[
    SELECT * FROM STUDENTS
    WHERE 1 = 1 

    <if test="studId != null">
    AND STUD_ID= #{studId}
    </if>

    <if test="name != null">
    AND NAME like #{name}
    </if>

    ]]>
</select>

我得到的异常：

Exception in thread "main" org.apache.ibatis.exceptions.PersistenceException: 
### Error querying database.  Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL   syntax; check the manual that corresponds to your MySQL server version …