客户端中查询某个用户，获取json时报错 错误内容：Caused by: javax.ws.rs.ProcessingException: No message body writer has been found for class cn.itcast.cxf.domain.User, ContentType: application/json
解决方法： 在pom.xml中引入两个坐标
<dependency>
<groupId>org.apache.cxf
</groupId>
<artifactId>cxf-rt-rs-extension-providers
</artifactId>
<version>3.0.1
</version>
</dependency>
<dependency>
<groupId>org.codehaus.jettison
</groupId>
<artifactId>jettison
</artifactId>
<version>1.3.7
</version>
</dependency>
