最近2018中文字幕在日韩欧美国产成人片_国产日韩精品一区二区在线_在线观看成年美女黄网色视频_国产精品一区三区五区_国产精彩刺激乱对白_看黄色黄大色黄片免费_人人超碰自拍cao_国产高清av在线_亚洲精品电影av_日韩美女尤物视频网站

RELATEED CONSULTING
相關(guān)咨詢
選擇下列產(chǎn)品馬上在線溝通
服務(wù)時間:8:30-17:00
你可能遇到了下面的問題
關(guān)閉右側(cè)工具欄

新聞中心

這里有您想知道的互聯(lián)網(wǎng)營銷解決方案
java如何寫接口給別人調(diào)用的示例代碼

計算機(jī)語言分類有很多,如C、C++、C#、Java、Php、Python等等,她們有各自的特性及擅長的領(lǐng)域,但她們各自又不是全能的。在一個稍微大型一點的項目都會用到多種語言共同完成,那么這些編程語言如何進(jìn)行通信呢。什么意思呢,就是比如說我Java寫的一個方法,其他編程語言要怎么去調(diào)用呢?這就是本文要探討的問題了。

創(chuàng)新互聯(lián)是專業(yè)的二道江網(wǎng)站建設(shè)公司,二道江接單;提供網(wǎng)站設(shè)計、成都做網(wǎng)站,網(wǎng)頁設(shè)計,網(wǎng)站設(shè)計,建網(wǎng)站,PHP網(wǎng)站建設(shè)等專業(yè)做網(wǎng)站服務(wù);采用PHP框架,可快速的進(jìn)行二道江網(wǎng)站開發(fā)網(wǎng)頁制作和功能擴(kuò)展;專業(yè)做搜索引擎喜愛的網(wǎng)站,專業(yè)的做網(wǎng)站團(tuán)隊,希望更多企業(yè)前來合作!

一般來說,方法層面的編程語言通信用的是網(wǎng)絡(luò)接口形式,只暴露出形參和結(jié)果供別人調(diào)用。接口一般分為接口定義者和接口調(diào)用者,定義者可以規(guī)定接收參數(shù)的類型及返回形式,而接口定義者則只能完全按照接口定義者規(guī)定的參數(shù)進(jìn)行訪問。就叫是我們所說的webService(網(wǎng)絡(luò)服務(wù))。

以前的做法是利用XML作接口格式定義,然后通過Http做通訊和請求,如大名鼎鼎的SOAP,其實現(xiàn)在也是的,只不過現(xiàn)在流行RestFul風(fēng)格的Rest接口形式,但用的還是XML+HTTP,那這兩者有啥區(qū)別呢?最大的區(qū)別就是SOAP返回的主要是XML格式,有時還需要附帶一些輔助文件,而Rest則還可以返回JSON類型的字符串,減少了很多繁亂的XML標(biāo)簽。本文就以Java為例,用她寫一個接口,并讓其他人去調(diào)用,以此來簡單展示接口調(diào)用是怎么樣一個過程。

步驟:

1、本機(jī)裝有Java JDK運行環(huán)境及編程IDE(如Myeclipse)

2、建立一個maven項目,用以下載jar包,項目結(jié)構(gòu)如下:

java如何寫接口給別人調(diào)用的示例代碼

3 pom.xml文件內(nèi)容如下:


 4.0.0
 ws
 restful
 war
 0.0.1-SNAPSHOT
 restful-server
 http://maven.apache.org
 
    UTF-8
    2.6
    2.23.1
    4.2.7.RELEASE
    3.1.0
    1.1.1
    1.7.6
  
 
  
   junit
   junit
   3.8.1
   test
  
  
  
      org.glassfish.jersey.ext
      jersey-spring3
      ${jersey-spring.version}
      
        
          org.springframework
          spring-core
        
        
          org.springframework
          spring-web
        
        
          org.springframework
          spring-beans
        
      
    
 
    
      org.glassfish.jersey.containers
      jersey-container-servlet
      ${jersey-spring.version}
    
    
      org.glassfish.jersey.containers
      jersey-container-servlet-core
      ${jersey-spring.version}
    
 
     
      org.glassfish.jersey.media
      jersey-media-json-jackson
      ${jersey.version}
    
    
      org.glassfish.jersey.media
      jersey-media-multipart
      ${jersey.version}
    
    
      org.glassfish.jersey.ext
      jersey-entity-filtering
      ${jersey.version}
    
 
    
    
      org.springframework
      spring-core
      ${spring.version}
    
 
    
      org.springframework
      spring-context
      ${spring.version}
    
 
    
      org.springframework
      spring-web
      ${spring.version}
    
 
    
      org.springframework
      spring-jdbc
      ${spring.version}
    
 
    
      org.springframework
      spring-tx
      ${spring.version}
    
    
      org.springframework
      spring-test
      ${spring.version}
      test
    
 
    
      javax.servlet
      javax.servlet-api
      ${servlet-api-version}
      provided
    
 
    
    
      ch.qos.logback
      logback-classic
      ${logback.version}
    
    
      org.slf4j
      jcl-over-slf4j
      ${jcloverslf4j.version}
    
  
 
 
  restful
 

4 applicationContext.xml內(nèi)容如下:

<?xml version="1.0" encoding="UTF-8"?>

 
  

5 web.xml則主要配置采用的容器、日志管理及攔截器,攔截器可以實現(xiàn)到達(dá)請求鄭濤之前進(jìn)行身份認(rèn)證,踢除沒有訪問資格的請求,而rest項目一般是用Jersey容器。配置如下:(kendy只是我的英文名,你們可以自己定義路徑)

<?xml version="1.0" encoding="UTF-8"?>

 
 
  contextConfigLocation
  classpath:applicationContext.xml
 
 
  
      org.springframework.web.context.ContextLoaderListener
    
 
 
  jersey-serlvet
  
      org.glassfish.jersey.servlet.ServletContainer
    
  
   javax.ws.rs.Application
   com.kendy.filter.RestJaxRsApplication
  
  1
 
 
  jersey-serlvet
  /*
 

6 攔截器如下:

import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import java.util.Map.Entry;
 
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.container.ContainerRequestContext;
import javax.ws.rs.container.ContainerRequestFilter;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.Response.Status;
import javax.ws.rs.ext.Provider;
 
/**
 * 攔截請求
 */
@Provider
public class MyFilter implements ContainerRequestFilter {
 
 @Override
 public void filter(ContainerRequestContext context) throws IOException {
  
  //打印出所有請求頭
  MultivaluedMap map = context.getHeaders();
  for(Entry> entry : map.entrySet()){
  	String key = entry.getKey();
  	List valueList = entry.getValue();
  	String values = valueList.toString();
  	System.out.println(key + ":"+values.substring(1,values.length()-1));
  }

7 注冊Jersey容器所要管理的類

import org.codehaus.jackson.jaxrs.JacksonJsonProvider;
import org.glassfish.jersey.server.ResourceConfig;
 
import com.kendy.restful.AccountManager;
import com.kendy.restful.AuthorityManager;
import com.kendy.restful.CardManager;
import com.kendy.restful.DeviceManager;
import com.kendy.restful.UserResource;
 
/**
 * ${DESCRIPTION}
 */
public class RestJaxRsApplication extends ResourceConfig {
 
  /**
   * Register JAX-RS application components.
   */
  public RestJaxRsApplication() {
 
    //服務(wù)類所在的包路徑
    packages("com.kendy.*");
    
    // register application resources
    this.register(YouClass.class);
   
    // register filters
    this.register(MyFilter.class);
    //this.register(RequestContextFilter.class);
    
    register(JacksonJsonProvider.class);
    //register(MultiPartFeature.class);
  }
}

8 接口定義(Restful風(fēng)格)

package com.kendy.restful;
 
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
 
import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
 
import org.springframework.stereotype.Component;
 
@Component
@Path("/CardManager")
public class CardManager {
	
  private SimpleDateFormat sdf =new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
 
  @POST
  @Path("size")
  @Consumes(MediaType.APPLICATION_JSON)
  @Produces(MediaType.APPLICATION_JSON)
  public Map size(){
  	Map map = new HashMap<>();
  	//do something here
  	map.put("Size", 1024);
  	return map;
  }
  
  @POST
  @Path("getDetail")
  @Consumes(MediaType.APPLICATION_JSON)
  @Produces(MediaType.APPLICATION_JSON)
  public Map>> getDetail(){
  	Map>> map = new HashMap<>();
  	//do something here
  	List> list = new ArrayList<>();
  	Map subMap = new HashMap<>();
  	subMap.put("UUID", 10086);
  	subMap.put("CardID", 10081);
  	subMap.put("StartTime", sdf.format(new Date()));
  	subMap.put("EndTime", sdf.format(new Date()));
  	list.add(subMap);
  	map.put("Card", list);
  	
  	return map;
  }
}

9 調(diào)用接口,有多種方式,本文用HttpClient

/**
   * 發(fā)送 post請求webService接口
   * @param url 訪問的接口地址
   * @param account 用戶名
   * @param code 密碼
   * @param param 查詢參數(shù)
   * @return HttpResponse 該類包含請求方法的態(tài)碼及返回的數(shù)據(jù)
   */ 
  public static HttpResponse post(String url,String account,String code,Map param) { 
    //創(chuàng)建HttpClient實例及Post方法
  	HttpClient httpclient = new DefaultHttpClient(); 
    HttpPost httppost = new HttpPost(url); 
    //對用戶密碼MD5加密
		code = getMD5(code);
		//添加相關(guān)請求頭,依情況而定
		httppost.setHeader("Authorization","WSSE profile=\"UsernameToken\""); 
		httppost.setHeader("X-WSSE","UsernameToken Username=\""+account+"\",PasswordDigest=\""+code+"\""); 
		httppost.addHeader("Content-type","application/json; charset=utf-8"); 
		httppost.setHeader("Accept", "application/json"); 
		httppost.setHeader("Connection","keep-alive"); 
		httppost.setHeader("Accept-Encoding","gzip"); 
		httppost.setHeader("Accept-Language", "zh-CN,en,*"); 
		httppost.setHeader("User-Agent","Mozilla/5.0"); 
		//傳遞請求參數(shù)
		String paramJsonStr = JSON.toJSONString(param);
		if(param != null)
			httppost.setEntity(new StringEntity(paramJsonStr, Charset.forName("UTF-8"))); 
		HttpResponse response = null;
		try { 
			//執(zhí)行post請求
      response = httpclient.execute(httppost); 
    } catch (Exception e) { 
      e.printStackTrace(); 
    } 
    return response;
  }

10 返回接口

java如何寫接口給別人調(diào)用的示例代碼

11 最后通過Map、List和Json工具對返回來的字面量進(jìn)行各種處理。

	/**
	 * 將從接口返回的JSON數(shù)據(jù)轉(zhuǎn)換為實體集合等待插入數(shù)據(jù)表
	 * 實體 IgmAccessControlChannelModel --> IGM_ACCESSCONTROL_CHANNEL
	 * 	  IgmStationDoorModel --> IGM_STATION_DOOR
	 */
	@SuppressWarnings({ "unchecked", "rawtypes" })
	private Map getDeviceEntityList(String data){
		Map totalMap = new HashMap<>();
		//把以下三個結(jié)果放到totalMap里返回
		List accessControlList = new ArrayList<>();
		List doorList = new ArrayList<>();
		List deviceIds = new ArrayList<>();
		
		IgmAccessControlChannelModel accessControlModel = null;
		IgmStationDoorModel stationDoorModel = null;
		
		Map map = JSON.parseObject(data, Map.class);
		map = (Map>>)map;
		List> deviceList = (List>) map.get("Device");
		
		for(Map deviceMap : deviceList){
			String deviceId = (String)(deviceMap.get("DeviceID")+"");
			Object channels = deviceMap.get("Channels");
			List> channelList = (List>)channels;
			
			String id = ""; //用于設(shè)置igmaccessControlchannel表和igmstationDoor表的stationDoorid
			//判斷該門禁設(shè)備ID在本平臺是否匹配
			boolean isMatched = isDeviceIdMatched(deviceId);
			
			if(isMatched){
				for(Map chnnelMap : channelList){
					accessControlModel = new IgmAccessControlChannelModel();
					stationDoorModel = new IgmStationDoorModel();
					for(Map.Entry entry : chnnelMap.entrySet()){
						String key = entry.getKey().trim();
						String value = "";
						if(key.equals("Channel")){
							value =(Integer)entry.getValue()+"";
						}else{
							value = (String)entry.getValue();
						}
						
						switch(key){
						case "Channel":
							accessControlModel.setCommandCode(Integer.parseInt(value));
							accessControlModel.setControlChannelName("控制通道"+value);
							stationDoorModel.setDoorCode(value);
							break;
						case "Description":
							stationDoorModel.setStationDoorName(value);
							break;
						default: break;
						}
					}
					id = UUID.randomUUID().toString();
					
					accessControlModel.setAccessControlChannelId(UUID.randomUUID().toString());
					accessControlModel.setDeviceId(deviceId);
					accessControlModel.setStationDoorId(id);
					
					stationDoorModel.setStationDoorId(id);
					stationDoorModel.setDeviceId(deviceId);
					stationDoorModel.setRemark("指紋門禁");
					
					accessControlList.add(accessControlModel);
					doorList.add(stationDoorModel);
				}
				deviceIds.add(deviceId);
			}else{
				//deviceId不匹配的跳過
			}
		}

以上就是本文的全部內(nèi)容,希望對大家的學(xué)習(xí)有所幫助,也希望大家多多支持創(chuàng)新互聯(lián)。


當(dāng)前文章:java如何寫接口給別人調(diào)用的示例代碼
分享URL:http://fisionsoft.com.cn/article/gppijo.html