目的
见另一篇博客代码需求
https://blog.csdn.net/GY325416/article/details/81412078
如何获取前台get请求的参数
/** * 返回get方法 填充前台传送来的参数 * * @param uri 要请求的接口地址 * @param request 前台请求过来后 controller层请求对象 * @author piper * @data 2018/7/3 11:19 */
HttpGet getMethod(String uri, HttpServletRequest request) {
try {
URIBuilder builder = new URIBuilder(uri);
Enumeration<String> enumeration = request.getParameterNames();
//将前台的参数放到我的请求里面
while (enumeration.hasMoreElements()) {
String nex = enumeration.nextElement();
builder.setParameter(nex, request.getParameter(nex));
}
return new HttpGet(builder.build());
} catch (URISyntaxException e) {
e.printStackTrace();
}
return null;
}如何获取post请求的参数
post请求时可能传的是form表单，也可能是json数据
如何判断前台传送的是json数据?通过request对象的ContentType请求头可以判断
如果是json，Content-Type应该是application-json;charset=utf-8，所以获取请求头判断就行了
/** * 返回post方法 * * @param uri 要请求的地址 * @param request 前台请求对象 * @author piper * @data 2018/7/3 11:19 */
HttpPost postMethod(String uri, HttpServletRequest request) {
StringEntity entity = null;
if (request.getContentType().contains("json")) {
entity = jsonData(request); //填充json数据
} else {
entity = formData(request); //填充form数据
}
HttpPost httpPost = new HttpPost(uri);
httpPost.setHeader("Content-Type", request.getHeader("Content-Type"));
httpPost.setEntity(entity);
return httpPost;
}获取post请求的form表单数据
/** * 处理post请求 form数据 填充form数据 * * @param request 前台请求 * @author piper * @data 2018/7/17 18:05 */
public UrlEncodedFormEntity formData(HttpServletRequest request) {
UrlEncodedFormEntity urlEncodedFormEntity = null;
try {
List<NameValuePair> pairs = new ArrayList<>(); //存储参数
Enumeration<String> params = request.getParameterNames(); //获取前台传来的参数
while (params.hasMoreElements()) {
String name = params.nextElement();
pairs.add(new BasicNameValuePair(name, request.getParameter(name)));
}
//根据参数创建参数体，以便放到post方法中
urlEncodedFormEntity = new UrlEncodedFormEntity(pairs, request.getCharacterEncoding());
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return urlEncodedFormEntity;
}获取post请求的json数据
/** * 处理post请求 json数据 * * @param request 前台请求 * @author piper * @data 2018/7/17 18:05 */
public StringEntity jsonData(HttpServletRequest request) {
InputStreamReader is = null;
try {
is = new InputStreamReader(request.getInputStream(), request.getCharacterEncoding());
BufferedReader reader = new BufferedReader(is);
//将json数据放到String中
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line);
}
//根据json数据创建请求体
return new StringEntity(sb.toString(), request.getCharacterEncoding());
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
