首先是key-value的模型：
public class PostValue {
private String key;
private String value;
public PostValue(String key, String value)
{
this.key = key;
this.value = value;
}
public String getKey()
{
return key;
}
public void setKey(String key) {
this.key = key;
}
public String getValue()
{
return value;
}
public void setValue(String value)
{
this.value = value;
}
}
然后是postutils ：
public class PostUtils {
public static String sendPost(String url,List<PostValue> parameters ) {
String result = "";// 返回的结果
BufferedReader in = null;// 读取响应输入流
PrintWriter out = null; //输出流
String params = "";// 编码之后的参数
try {
// 编码请求参数
if(parameters.size() == 1){//請求只有一个
for(PostValue p:parameters){
String s=p.getKey()+"="+p.getValue();
System.out.println(1);
params=s;
}
}else{
String x=null;
for(PostValue p:parameters){
x+=p.getKey()+"="+p.getValue()+"&";
}
params =x;
System.out.println(2);
}
// 创建URL对象
java.net.URL connURL = new java.net.URL(url);
// 打开URL连接
java.net.HttpURLConnection httpConn = (java.net.HttpURLConnection) connURL.openConnection();
// 设置通用属性
httpConn.setRequestProperty("Accept", "*/*");
httpConn.setRequestProperty("Connection", "Keep-Alive");
httpConn.setRequestProperty("User-Agent","Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1)");
httpConn.setRequestProperty("Accept-Charset", "UTF-8");
httpConn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8");
// 设置POST方式
httpConn.setDoInput(true);
httpConn.setDoOutput(true);
// 获取HttpURLConnection对象对应的输出流
out = new PrintWriter(httpConn.getOutputStream());
// 发送请求参数
System.out.println("requers parms::"+params);
out.write(params);
// flush输出流的缓冲
out.flush();
// 定义BufferedReader输入流来读取URL的响应，设置编码方式
in = new BufferedReader(new InputStreamReader(httpConn.getInputStream(),"UTF-8"));
String line;
// 读取返回的内容
while ((line = in.readLine()) != null) {
result += line+"\r\n";
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (out != null) {
out.close();
}
if (in != null) {
in.close();
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
return result;
}
public static void main(String[] args) {
List<PostValue> p=new ArrayList<PostValue>();
PostValue p1=new PostValue("q_source", "IxhuBltZIjCKM");
p.add(p1);
String sendPost = PostUtils.sendPost("https://dev-openapi.dmhmusic.com/OPENAPI/openApiLogin.json", p);
System.out.println("response result:"+sendPost);
}
}
发现在server端响应的是
通过postMan直接请求发现：
这是一种数据压缩格式，详情见：https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Encoding
然后将：
in = new BufferedReader(new InputStreamReader(httpConn.getInputStream(),"UTF-8"));
修改成：
GZIPInputStream gzipInputStream = new GZIPInputStream(httpConn.getInputStream());
in = new BufferedReader(new InputStreamReader(gzipInputStream));
最终：
当然也可以使用第三方jar包，比如okHttp.