Jersey实现Restful服务(实例讲解)

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 http://maven.apache.org/maven-v4_0_0.xsd">
 <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 + '\'' +
    ", name='" + name + '\'' +
    ", addr='" + addr + '\'' +
    '}';
 }
}

4.web.xml配置。

<!doctype web-app public
 "-//sun microsystems, inc.//dtd web application 2.3//en"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
 <display-name>archetype created web application</display-name>
 <servlet>
 <servlet-name>jersey restful application</servlet-name>
 <servlet-class>org.glassfish.jersey.servlet.servletcontainer</servlet-class>
 <init-param>
  <param-name>jersey.config.server.provider.packages</param-name>
  <param-value>com.restful</param-value>
 </init-param>
 </servlet>
 <servlet-mapping>
 <servlet-name>jersey restful application</servlet-name>
 <url-pattern>/rest/*</url-pattern>
 </servlet-mapping>
</web-app>

5.搭建本地tomcat

6.运行结果、http://localhost:8080/jerseydemo/rest/application.wadl是所有对外接口的调用方法。使用postman来看看这个接口是怎么调用的吧。

post请求

get请求

以上这篇jersey实现restful服务(实例讲解)就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。