java发送put请求

java怎样发送put请求到应用程序

PUT请求是神马东东，我听说过POST请求

java中用post，get，put请求方法： public static string javahttpget(string url,string charset){ string resultdata = null; try { url pathurl = new url(url); //创建一个url对象 httpurlconnection urlconnect = (httpurlconnection) pathurl.openconnection(); //打开一个httpurlconnection连接 urlconnect.setconnecttimeout(30000); // 设置连接超时时间 urlconnect.connect(); if (urlconnect.getresponsecode() == 200) { //请求成功 resultdata = readinputstream(urlconnect.getinputstream(), charset); } } catch (malformedurlexception e) { logl.getinstance().getlog().error("url出错！", e); } catch (ioexception e) { logl.getinstance().getlog().error("读取数据流出错！", e); } return resultdata; } public static string javahttppost(string url,map map,string charset){ string resultdata=null; stringbuffer params = new stringbuffer(); try { iterator> ir = map.entryset().iterator(); while (ir.hasnext()) { map.entry entry = (map.entry) ir.next(); params.append(urlencoder.encode(entry.getkey(),charset) + "=" + urlencoder.encode(entry.getvalue().tostring(), charset) + "&"); } byte[] postdata = params.deletecharat(params.length()).tostring().getbytes(); url pathurl = new url(url); //创建一个url对象 httpurlconnection urlconnect = (httpurlconnection) pathurl.openconnection(); urlconnect.setconnecttimeout(30000); // 设置连接超时时间 urlconnect.setdooutput(true); //post请求必须设置允许输出 urlconnect.setusecaches(false); //post请求不能使用缓存 urlconnect.setrequestmethod("post"); //设置post方式请求 urlconnect.setinstancefollowredirects(true); urlconnect.setrequestproperty("content-type","application/x-www-form-urlencoded; charset="+charset);// 配置请求content-type urlconnect.connect(); // 开始连接 dataoutputstream dos = new dataoutputstream(urlconnect.getoutputstream()); // 发送请求参数 dos.write(postdata); dos.flush(); dos.close(); if (urlconnect.getresponsecode() == 200) { //请求成功 resultdata = readinputstream(urlconnect.getinputstream(),charset); } } catch (malformedurlexception e) { logl.getinstance().getlog().error("url出错！", e); } catch (ioexception e) { logl.getinstance().getlog().error("读取数据流出错！", e); } catch (exception e) { logl.getinstance().getlog().error("post出错！", e); } return resultdata; }

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