HttpClient调用RestFull接口（post和get方式）

/**
* @version V1.0
* @Description 调用http接口工具类
* @Author pc
* @Date 2018/3/2 11:03
*/
public class HttpServiceUtil {
/**
* 接口调用(post请求) 数据处理
*
* @param url
* 请求路径 例如：:8080/test/test
* @param param
* 请求参数 例如：{ "userName":"Lily", "password":"123456" }
* @return 响应数据 例如：{ "resultId":"1" "resultMsg":"操作成功" }
*/
public static String insureResponsePost(String url, String param) {
PrintWriter out = null;
InputStream is = null;
BufferedReader br = null;
String result = "";
HttpURLConnection conn = null;
StringBuffer strBuffer = new StringBuffer();
try {
URL realUrl = new URL(url);
conn = (HttpURLConnection) realUrl.openConnection();
// 设置通用的请求属性
conn.setRequestMethod( "POST");
conn.setConnectTimeout(20000);
conn.setReadTimeout(300000);
conn.setRequestProperty("Charset", "UTF-8");
　　　　　　　// 传输数据为json，如果为其他格式可以进行修改
conn.setRequestProperty( "Content-Type", "application/json");
conn.setRequestProperty( "Content-Encoding", "utf-8");
// 发送POST请求必须设置如下两行
conn.setDoOutput( true);
conn.setDoInput( true);
conn.setUseCaches( false);
// 获取URLConnection对象对应的输出流
out = new PrintWriter(conn.getOutputStream());
// 发送请求参数
out.print(param);
// flush输出流的缓冲
out.flush();
is = conn.getInputStream();
br = new BufferedReader( new InputStreamReader(is));
String line = null;
while ((line=br.readLine())!= null) {
strBuffer.append(line);
}
result = strBuffer.toString();
} catch (Exception e) {
System. out.println( "发送 POST 请求出现异常！" + e);
e.printStackTrace();
}
// 使用finally块来关闭输出流、输入流
finally {
try {
if (out != null) {
out.close();
}
if (br != null) {
br.close();
}
if (conn!= null) {
conn.disconnect();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
return result;
}

/**
* Http接口调用(get请求) 数据处理
* @param url 请求地址 例如：:8080/test/test?username=zhangsan$username=123456 * @return
*/ public static String insureResponseBlockGet(String url) {
PrintWriter out = null;
String result = "";
HttpURLConnection conn = null;
InputStream is = null;
BufferedReader br = null;
StringBuffer strBuffer = new StringBuffer();
try {
URL realUrl = new URL(url);
// 打开和URL之间的连接
conn = (HttpURLConnection) realUrl.openConnection();
// 设置通用的请求属性
conn.setRequestMethod("GET");
conn.setConnectTimeout(20000);
conn.setReadTimeout(300000);
　　　　　　 // 传输数据为json，如果为其他格式可以进行修改
conn.setRequestProperty("Content-Type", "application/json");
is = conn.getInputStream();
br = new BufferedReader( new InputStreamReader(is));
String line = null;
while ((line=br.readLine())!= null) {
strBuffer.append(line);
}
result = strBuffer.toString();
} catch (Exception e) {
System.out.println( "发送 GET请求出现异常！" + e);
e.printStackTrace();
}
// 使用finally块来关闭输出流、输入流
finally {
try {
if (out != null) {
out.close();
}
if (br != null) {
br.close();
}
if (conn != null) {
conn.disconnect();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
return result;
}
}