get方法下的form-data参数传递策略

1、参数组织形式为form-data

url?parm1=value1&parm2=value2

注意: 参数值value1和value2，需要经过URLEncoded.encode(value,“utf-8”)编码处理，否则会产生400错误。

2、参数传递，可以有多种形式。

2.1 第一种方式

（1）原始参数可以通过Map或JSONObject进行封装；

Map<String,Object> param = new HashMap<String,Object>();
param.put("key1","value1");
param.put("key2","value2");
或者
JSONObject param = new JSONObject();
param.put("key1","value1");
param.put("key2","value2");

（2）通过遍历的方式间参数组织起来，试下如下：

StringBuilder qBuilder = new StringBuilder();
for(Map.Entry<String,Object> entry: param.entrySet()){
    qBuilder.length() > 0 ? qBuilder.append("&"):"";
    qBuilder.append(entry.getKey()).append("=").append(URLEncoder.encode(entry.getValue(),"utf-8")) ;
}

（3） 拼接起来

url?qBuilder.toString();

2.2 第二种方式

直接拼接法：

StringBuilder qBuilder = new StringBuilder();
qBuilder.append("key1").append("=").append(URLEncoder.encode("value1","utf-8")) ;
qBuilder.append("&");
qBuilder.append("key2").append("=").append(URLEncoder.encode("value2","utf-8")) ;

3 http请求的设置

 connection.setRequestProperty("accept", "*/*");
 connection.setRequestProperty("connection", "Keep-Alive");
// connection.setRequestProperty("Charset","utf-8");
 connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded;charset=utf-8");
 connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
 connection.setConnectTimeout(15000);
 connection.setReadTimeout(60000);
 connection.setRequestMethod("GET");

 //设置请求头信息
 if ( StringUtils.isNotBlank(token) ) {
      String authHeaderValue = "Bearer " + token;
      connection.setRequestProperty("Authorization", token);
 }