发送请求给jersey server时，没有响应，用wireshark抓包发现，返回了415 Unsupported Media Type。
Chapter 9. Support for Common Media Type Representations
原因：java代码里的 POJO 虽然使用了json相关模块的包来注解，但是还需要jersey 相关的依赖，来调用执行序列化反序列化。jersey支持MOXy、Jackson 和 Java API for JSON Binding（JSON-B）这三种json序列化反序列化工具，使用不同的json 工具则需要引入不同的jersey 对应的包。
如MOXy
To use MOXy as your JSON provider you need to add jersey-media-moxy module to your pom.xml file:
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-moxy</artifactId>
<version>2.35</version>
</dependency>
还有 Jackson (1.x and 2.x)
To use Jackson 2.x as your JSON provider you need to add jersey-media-json-jackson module to your pom.xml file:
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-json-jackson</artifactId>
<version>2.35</version>
</dependency>
To use Jackson 1.x it'll look like:
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-json-jackson1</artifactId>
<version>2.35</version>
</dependency>