okhttp

一时失言乱红尘 2022-06-02 09:28 211阅读 0赞

# okhttp的快速使用 #

maven依赖

<dependency>
    			<groupId>com.squareup.okhttp3</groupId>
    			<artifactId>okhttp</artifactId>
    			<version>3.3.0</version>
    		</dependency>

工具类

/**
     * 基于okhttp的请求工具类
     * zymzhumou 2018-1-9
     */
    public class OkHttpUtil {
    
        private static class SingletonHolder {
            private static OkHttpClient instance = new OkHttpClient();
    	}
        public static  OkHttpClient getInstance() {
    		return SingletonHolder.instance;
    	}
        /**
         * @param isPost post or get 
         * @param parmMap 值
         * @param url 请求地址
         * @param headerMap 请求头
         * @return null or Response
         */
        public static Response send(boolean isPost,Map<String ,String>parmMap,String url,Map<String,String>headerMap){
        	Request request;
        	if(isPost){
        		FormBody form = null ;
        		if(null!=parmMap&&!parmMap.isEmpty()){
        			//设置提交参数(post)
            	    Builder formbuilder = new FormBody.Builder();
            	    for(Map.Entry<String, String> entry : parmMap.entrySet()){
            	    	formbuilder.add(entry.getKey(), entry.getValue());
            	    }
            	    form = formbuilder.build();
        		}else{
        			return null;//post必须传值
        		}
        		if(null!=headerMap&&!headerMap.isEmpty()){
            	    okhttp3.Request.Builder requestbuilder = new  Request.Builder();
            	    for(Map.Entry<String, String> entry : headerMap.entrySet()){
            	    	requestbuilder.addHeader(entry.getKey(), entry.getValue());
            	    }
            	    request = requestbuilder.post(form).url(url).build();
            	    
        		}else{
        			request = new Request.Builder().post(form).url(url).build();
        		}
        		
        	            
        	}else{
        		if(null!=headerMap&&!headerMap.isEmpty()){
            	    okhttp3.Request.Builder requestbuilder = new  Request.Builder();
            	    for(Map.Entry<String, String> entry : headerMap.entrySet()){
            	    	requestbuilder.addHeader(entry.getKey(), entry.getValue());
            	    }
            	    request = requestbuilder.get().url(url).build();
            	    
        		}else{
        			request = new Request.Builder().get().url(url).build();
        		}
        	}
        	//创建"调用" 对象
            Call call = getInstance().newCall(request);
            try {
    			Response response = call.execute();
    			return response;
    		} catch (IOException e) {
    			e.printStackTrace();
    			return null;
    		}
            
        	
        }
       
    
    }