java通过http发送get请求
/**
* 发送get请求
*
* @param url 发送请求的 URL
* @param params 请求参数,请求参数应该是 name1=value1&name2=value2 的形式。
* @param contentType 编码类型
* @return 响应结果
*/
public static Object getSend(String url, String params, String contentType) {
StringBuilder result = new StringBuilder();
BufferedReader in = null;
try {
String urlString = !(params==null || params.isEmpty()) ? url + "?" + params : url;
URL realUrl = new URL(urlString);
URLConnection con = realUrl.openConnection();
con.setRequestProperty("accept", "*/*");
con.setRequestProperty("connection", "Keep-Alive");
con.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
con.connect();
in = new BufferedReader(new InputStreamReader(con.getInputStream(), contentType));
String line;
while ((line = in.readLine()) != null) {
result.append(line);
System.out.println(result);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (in != null) {
in.close();
}
} catch (Exception ex) {
}
}
return result;
}
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