REST 简单例子

项目中要用到Rest的web service，提前做了一个Demo，做下笔记。

Demo 分2个项目，一个是restServer 一个是restClient, 都是Spring MVC架构。主要看代码：

 

Pojos:

package com.pojo;

import java.io.Serializable;

public class Phone implements Serializable{
	
	private static final long serialVersionUID = 1L;
	private String phoneNumber="1";
	private String phoneType="1";

	public String getPhoneNumber() {
		return phoneNumber;
	}
	public void setPhoneNumber(String phoneNumber) {
		this.phoneNumber = phoneNumber;
	}

	public String getPhoneType() {
		return phoneType;
	}
	public void setPhoneType(String phoneType) {
		this.phoneType = phoneType;
	}
}

 

package com.pojo;

import java.io.Serializable;

public class PhoneResult implements Serializable {

	private static final long serialVersionUID = 1L;

	protected String rawPhoneNumber;
	protected String result;

	public String getRawPhoneNumber() {
		return rawPhoneNumber;
	}

	public void setRawPhoneNumber(String rawPhoneNumber) {
		this.rawPhoneNumber = rawPhoneNumber;
	}

	public String getResult() {
		return result;
	}

	public void setResult(String result) {
		this.result = result;
	}
}

 

restServer controller:

 

package com.acxiom.rest.controller;

import org.codehaus.jackson.map.ObjectMapper;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

import com.pojo.Phone;
import com.pojo.PhoneResult;

@Controller
@RequestMapping({ "/helloworld" })
public class HelloWorldController {

	@RequestMapping(value = { "/hi/{userName}" }, method = {RequestMethod.GET })
	@ResponseBody
	public String hi(@PathVariable("userName") String userName) {

		return "Hi, " + userName;
	}
	
	@RequestMapping(value = { "/hello" }, method = {RequestMethod.GET })
	@ResponseBody
	public String process(String userName) {

		return "Hello, " + userName;
	}
	
	@RequestMapping(value = { "/hiPost/{userName}" }, method = {RequestMethod.POST })
	@ResponseBody
	public String hiPost(@PathVariable("userName") String userName) {

		return "Hi, " + userName;
	}
	
	@RequestMapping(value = { "/hello" }, method = {RequestMethod.POST })
	@ResponseBody
	public String helloPost(String userName) {

		return "Hello, " + userName;
	}
	
	@RequestMapping(value = { "/hygiene/{phone}" }, method = {RequestMethod.POST },produces="application/json")
	@ResponseBody
	public PhoneResult hygiene(@PathVariable("phone")String phoneObject) {
		PhoneResult result = new PhoneResult();
		try {
			ObjectMapper mapper = new ObjectMapper();
			Phone phone = mapper.readValue(phoneObject, Phone[].class)[0];
			result.setRawPhoneNumber(phone.getPhoneNumber().toUpperCase());
			result.setResult("SUCCESS");
		}catch (Exception e) {
			e.printStackTrace();
			result.setResult("ERROR, " + e.getMessage());
		}
		
		return result;
	}
}

 

 

restClient controller:

 

package com.acxiom.rest.controller;

import java.util.HashMap;
import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpEntity;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.client.RestTemplate;

import com.pojo.Phone;
import com.pojo.PhoneResult;
import com.util.JsonUtil;

@Controller
public class HomeController {

	@Autowired
	private RestTemplate restTemplate;

	@RequestMapping(value = { "/home" }, method = { org.springframework.web.bind.annotation.RequestMethod.GET })
	public String home(ModelMap model) throws Exception {

		//test get hi method 1
		String url = "http://localhost:8080/restServer/helloworld/hi/{userName}.spring";
		Map<String, String> map = new HashMap<String, String>();
		map.put("userName", "TOMMY");
		model.addAttribute("HiResponse", getResponseMessage(url, map));
		
		//test get hi method 2
		model.addAttribute("HiResponse2", this.restTemplate.getForEntity(url, String.class, "TOMMY2").getBody());
		
		//test get hello method
		url = "http://localhost:8080/restServer/helloworld/hello.spring?userName=seaboy";
		model.addAttribute("HelloResponse", getResponseMessage(url, null));
		
		//test post hello method  
		model.addAttribute("HelloPostResponse", this.restTemplate.postForEntity("http://localhost:8080/restServer/helloworld/hello.spring?userName=seaboyPost", null, String.class).getBody());
		
		//test post hygiene method
		MultiValueMap<String,Object> dataMap2 = new LinkedMultiValueMap<String, Object>();
		Phone p = new Phone();
		p.setPhoneNumber("0513 1111");
		dataMap2.add("phone", JsonUtil.javaToJson(p));
		HttpEntity<Object> entity2 = new HttpEntity<Object>(dataMap2);  
		model.addAttribute("PhoneResponse", this.restTemplate.postForObject("http://localhost:8080/restServer/helloworld/hygiene/{phone}.spring", entity2,  PhoneResult.class, dataMap2));

		
		return "home";
	}



	private String getResponseMessage(String url, Map<String, String> paras) {
		if (paras != null) {
			return this.restTemplate.getForEntity(url, String.class, paras).getBody();
		} else {
			return this.restTemplate.getForEntity(url, String.class).getBody();
		}
		
	}
}

 

 

JsonUtil:

package com.util;

import java.io.StringWriter;

import org.codehaus.jackson.map.ObjectMapper;

public class JsonUtil {

	public static String javaToJson(Object o) throws Exception{
		StringWriter writer = new StringWriter();
        ObjectMapper mapper = new ObjectMapper();
        mapper.writeValue(writer, o);
        String json=writer.toString();
        return json;
	}

}

 

home.jsp:

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags"%>
<%@ taglib prefix="sec" uri="http://www.springframework.org/security/tags" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>HOME PAGE</title>
</head>
<body>
<div id="main">
	<div id="top">
		Hi Response: ${HiResponse} <br>
		Hi2 Response: ${HiResponse2}
	</div>
	<div id="buttom">
		Hello Response: ${HelloResponse} <br>
		Hello Post Response: ${HelloPostResponse}<br>
		Phone Response: ${PhoneResponse.result}
	</div>
</div>
</body>
</html>

 

测试结果：

Hi Response: Hi, TOMMY 
Hi2 Response: Hi, TOMMY2
Hello Response: Hello, seaboy 
Hello Post Response: Hello, seaboyPost
Phone Response: 86 0513 11112222