Jersey 是基于Java的一个轻量级RESTful风格的Web Services框架。以下我基于IDEA实现Restful完整Demo。
1.创建maven-web工程，后面就是正常的maven工程创建流程。
2.添加Jersey框架的maven文件。
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 "> <modelVersion>4.0.0</modelVersion> <groupId>com.restful</groupId> <artifactId>jerseyDemo</artifactId> <packaging>war</packaging> <version>1.0-SNAPSHOT</version> <name>jerseyDemo Maven Webapp</name> <url>http://maven.apache.org</url> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>org.glassfish.jersey.containers</groupId> <artifactId>jersey-container-servlet</artifactId> <version>2.9</version> </dependency> <dependency> <groupId>org.glassfish.jersey.core</groupId> <artifactId>jersey-client</artifactId> <version>2.9</version> </dependency> <dependency> <groupId>org.glassfish.jersey.media</groupId> <artifactId>jersey-media-json-jackson</artifactId> <version>2.9</version> </dependency> <dependency> <groupId>com.sun.jersey</groupId> <artifactId>jersey-client</artifactId> <version>1.19.3</version> </dependency> </dependencies> <build> <finalName>jerseyDemo</finalName> </build> </project>
3.Restful接口定义。
package com.restful.service; import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.ObjectMapper; import com.restful.entity.PersonEntity; import javax.ws.rs.*; import javax.ws.rs.core.MediaType; import java.io.IOException; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; /** * Created by XuHui on 2017/8/2. */ @Path("/JerseyService") public class JerseyService { private static Map<String, PersonEntity> map = new HashMap<String, PersonEntity>(); @GET @Path("/getAllResource") @Produces(MediaType.APPLICATION_JSON) public String getAllResource() throws JsonProcessingException { List<PersonEntity> list = new ArrayList<PersonEntity>(); for (PersonEntity entity : map.values()) { list.add(entity); } ObjectMapper mapper = new ObjectMapper(); return mapper.writeValueAsString(list); } @GET @Path("/getResourceById/{id}") @Produces(MediaType.APPLICATION_JSON) public String getResource(@PathParam("id") String id) throws JsonProcessingException { ObjectMapper mapper = new ObjectMapper(); return mapper.writeValueAsString(map.get(id)); } @POST @Path("/addResource/{person}") @Consumes({MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON}) @Produces(MediaType.APPLICATION_JSON) public String addResource(String person) throws IOException { ObjectMapper mapper = new ObjectMapper(); PersonEntity entity = mapper.readValue(person, PersonEntity.class); map.put(entity.getId(), entity); return mapper.writeValueAsString(entity); } @GET @Path("/getRandomResource") @Produces(MediaType.APPLICATION_JSON) public String getRandomResource() throws JsonProcessingException { ObjectMapper mapper = new ObjectMapper(); PersonEntity entity = new PersonEntity("NO1", "Joker", "http:///"); return mapper.writeValueAsString(entity); } }
PersonEntity实体类实现。
package com.restful.entity; /** * Created by XuHui on 2017/8/2. */ public class PersonEntity { private String id; private String name; private String addr; public PersonEntity() { } public PersonEntity(String id, String name, String addr) { this.id = id; this.name = name; this.addr = addr; } public String getId() { return id; } public void setId(String id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getAddr() { return addr; } public void setAddr(String addr) { this.addr = addr; } @Override public String toString() { return "PersonEntity{" + "id='" + id + '\'' + ",\'' + ", addr='" + addr + '\'' + '}'; } }
4.web.xml配置。