user.setAge("27");
user.setUserId("005");
user.setUserName("Fmand");
return user;
}
MediaType.APPLICATION\_JSON 说明输出的是JSON格式
2,运行项目，浏览器输入<http://localhost:8089/RestDemo/rest/users/getUserJson>
期望获取到json的数据，此时，项目报错
org.glassfish.jersey.message.internal.MessageBodyProviderNotFoundException: MessageBodyWriter not found for media type=application/json, type=class com.waylau.rest.bean.User, genericType=class com.waylau.rest.bean.User.
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor
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TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:247) at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162) at org.glassfish.jersey.filter.LoggingFilter.aroundWriteTo(LoggingFilter.java:293) at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162) at org.glassfish.jersey.server.internal.JsonWithPaddingInterceptor.aroundWriteTo(JsonWithPaddingInterceptor.java:103) at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162) at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:88) at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162) at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1154) at org.glassfish.jersey.server.ServerRuntime
TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:247)atorg.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)atorg.glassfish.jersey.filter.LoggingFilter.aroundWriteTo(LoggingFilter.java:293)atorg.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)atorg.glassfish.jersey.server.internal.JsonWithPaddingInterceptor.aroundWriteTo(JsonWithPaddingInterceptor.java:103)atorg.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)atorg.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:88)atorg.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)atorg.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1154)atorg.glassfish.jersey.server.ServerRuntimeResponder.writeResponse(ServerRuntime.java:571)
at org.glassfish.jersey.server.ServerRuntime
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at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:262)
此时，需要获取json转换包的支持 。
可以由多种方式实现：MOXy、JSON-P、Jackson、Jettison等，本例为Jackson。
3. jackson-all-1.9.11.jar 下载地址<http://wiki.fasterxml.com/JacksonDownload>
4. 项目中引入jackson-all-1.9.11.jar
5.在“com.waylau.rest”目录下创建RestApplication.java
package com.waylau.rest;
import org.codehaus.jackson.jaxrs.JacksonJsonProvider;
import org.glassfish.jersey.filter.L
真题解析、进阶学习笔记、最新讲解视频、实战项目源码、学习路线大纲
详情关注公中号【编程进阶路】
oggingFilter;
import org.glassfish.jersey.server.ResourceConfig;
/**
-
应用
-
@author waylau.com
-
2014-3-18
*/
public class RestApplication extends ResourceConfig {
public RestApplication() {//服务类所在的包路径
packages(“com.waylau.rest.resources”);
//注册JSON转换器
register(JacksonJsonProvider.class);}
}
6.修改web.xml，初始化从RestApplicaton进入应用，如下：
### 文末
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同样是干到30岁，普通人写业务代码划水，榜样们深度学习拓宽视野晋升管理。
这也是为什么大家都说30岁是程序员的门槛，很多人迈不过去，其实各行各业都是这样都会有个坎，公司永远都缺的高级人才，只用这样才能在大风大浪过后，依然闪耀不被公司淘汰不被社会淘汰。
**269页《前端大厂面试宝典》**
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**前端面试题汇总**
**JavaScript**
