java后端接收http请求参数
如果请求参数json
1.以@RequestParam接收
@PostMapping("ccc1") public String ccc1(@RequestParam("name") String name) { return name; }
2.以实体类方式接收
@PostMapping("ccc2") public String getList(@RequestBody TestUser user) { return "success"; }
3.以map接收
@PostMapping("ccc") public boolean ccc3(@RequestBody Map<String,Object> map) { if (map.containsKey("name")){ String name = map.get("name").toString(); boolean b = testUserService.selectAllByName(name); return b; }else { return false; } }
4.List接收
当前端传来这样一个json数组:[{id,username,password},{id,username,password},
{id,username,password},...]时,用List<E>接收
@PostMapping("getList") public String getList(@RequestBody List<TestUser> list) { for (TestUser user : list) { System.out.println(user.toString()); } return "success"; }
5.常规单个参数list?username=bb&password=123
@RequestMapping("list") public String list(String username,String password) { System.out.println(username+" "+password); return "success"; }
6.以xml以为参数
@RequestMapping("/wcJsPayCallback") public void wcJsPayCallback(HttpServletRequest req, HttpServletResponse res ) throws Exception { HashMap<String, String> retMap = MessageUtil.parseXmlToHashMap(req); log.debug("--------------------------收到支付回调--------------------------------------------"); log.debug(XMLUtil.mapToXml(retMap)); log.debug("----------------------------------------------------------------------------------"); }
MessageUtil类parseXmlToHashMap办法
@SuppressWarnings("unchecked")
public static HashMap<String, String> parseXmlToHashMap(HttpServletRequest request)
throws Exception {
// 将解析结果存储在HashMap中
HashMap<String, String> map = new HashMap<String, String>();
// 从request中取得输入流
InputStream inputStream = request.getInputStream();
// 读取输入流
SAXReader reader = new SAXReader();
Document document = reader.read(inputStream);
// 得到xml根元素
Element root = document.getRootElement();
// 得到根元素的所有子节点
List<Element> elementList = root.elements();
// 遍历所有子节点
for (Element e : elementList)
map.put(e.getName(), e.getText());
// 释放资源
inputStream.close();
inputStream = null;
return map;
}
7.直接post json参数{"request":"1","request2":"2","request2":"2"}
@RequestMapping("/callback") public String callback(@RequestBody String request, HttpServletRequest req, HttpServletResponse res) throws Exception { log.debug("--收到银行支付回调start--"); try{ log.debug("requestContent:"+ request); }
8.直接post json参数{"request":"1","request2":"2","request2":"2"}
@RequestMapping("/callbackV3") @ResponseBody public WcJsapiCallbackV3ParamsBean callbackV3(HttpServletRequest req, HttpServletResponse res ) throws Exception { log.debug("--------------------------微信支付分callbackV3通知--------------------------------------------"); String json = org.apache.commons.io.IOUtils.toString(req.getInputStream()); }
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