springbootAPI接收参数的方式
背景：
1.接口类使用注解 @RestController 这是个组合注解 包含@Controller @ResponseBody 所以呢 返回客户端的是json格式的字符串，不能跳转到页面
2.@RequestMapping(value="/getDownloadMd5",method=RequestMethod.POST) post请求
请求方式：
第一种 入参中 使用注解@RequestParam
当请求参数username不存在时会有异常发生,可以通过设置属性required=false解决,例如: @RequestParam(value="username", required=false)
点击查看代码
/* *
* @Description: 使用@RequestParm 可以处理入参字段比较少的请求
* @Param: [username, password]
* @Author: ZhaoJs
* @Date: 2021/9/24
* @Version: 1.0
**/
@RequestMapping(value="/login",method=RequestMethod.GET)
public ApiResponse<Map<String,Object>> addUser(@RequestParam("username") String username, @RequestParam("password") String password) {
ApiResponse<Map<String,Object>> api = new ApiResponse<Map<String,Object>>();
return api;
}
第二种 请求参数比较多用bean来封装接受参数
点击查看代码
/* *
* @Description: 通过bean来封装接口参数
* @Param: [user] bean对象
* @Author: ZhaoJs
* @Date: 2021/9/24
* @Version: 1.0
**/
@RequestMapping("/addUser3")
public String addUser2(UserModel user) {
System.out.println("username is:"+user.getUsername());
System.out.println("password is:"+user.getPassword());
ApiResponse<Map<String,Object>> api = new ApiResponse<Map<String,Object>>();
return api;
}
@RequestMapping(value = "/updateMemberBase" ,method = RequestMethod.POST)
public ApiResponse<MesMemberVo> updateMember( @RequestBody MesMemberVo mesMemberVo){
@RequestBody post请求中使用
第三种 通HttpServletRequest 来获取参数，get post都可以 可以获取多个参数 也可以获取json字符串
点击查看代码
/* *
* @Description: 使用@RequestParm 可以处理入参字段比较少的请求
* @Param: [username, password]
* @Author: ZhaoJs
* @Date: 2021/9/24
* @Version: 1.0
**/
@RequestMapping(value = "api/thbmember/thblogin" ,method = RequestMethod.GET)
public ApiResponse<String> thblogin(HttpServletRequest request,HttpServletResponse response,@RequestParam("memberAccount") String memberAccount,@RequestParam("memberPassword") String memberPassword,
@RequestParam("captchaCode") String captchaCode){
ApiResponse<String> apiResponse = new ApiResponse<>();
try {
String memberCode = thbMemberService.login(request,response,memberAccount, memberPassword,captchaCode);
apiResponse.setData(memberCode);
apiResponse.setStatus(0);
} catch (Exception e) {
apiResponse.setStatus(1);
apiResponse.setStatusText(e.getMessage());
}
return apiResponse;
}
------requestSession 验证码逻辑 第一步获取验证码的时候 同时把这个值 放到了session中
HttpSession session = request.getSession();
session.setAttribute("captchaCode", captchaCode.toLowerCase());
String captchaCodesseion = (String) request.getSession().getAttribute("captchaCode");
if(!captchaCode.equals(captchaCodesseion)){
throw new RuntimeException("图形码输入错误");
}
第四种 获取 json对象 通过@RequestBody 可以将请求体中的JSON字符串绑定到相应的bean上
也可以将其分别绑定到对应的字符串上
也可以 net.sf.json上 阿里巴巴
点击查看代码
@RequestMapping(value="/getDownloadMd5",method=RequestMethod.POST)
public ApiResponse<Map<String,Object>> getDownloadMd5(@RequestBody JSONObject jsonParam){
ApiResponse<Map<String,Object>> api = new ApiResponse<Map<String,Object>>();
// 直接将json信息打印出来
//System.out.println(jsonParam.toString());
String cardNo = jsonParam.getString("cardNo");
String policyNo = jsonParam.getString("policyNo");
return api
}
String insuredAllStr = request.getParameter("insuredAllStr");
System.out.println("insuredAllStr:"+insuredAllStr); //这种是获取不到json对象的
4.2 HttpServletRequest request 解析requset
点击查看代码
@RequestMapping(value="/underWirteBYZT",method=RequestMethod.POST)
public void underWirteBYZT(HttpServletRequest request, HttpServletResponse response) {
String requestStr = "";
String message = "";
PrintWriter pw = null;
Map<String, Object> retMap = new HashMap<String, Object> ();
try {
pw = response.getWriter();
requestStr = HttpContextUtils.getStrFromRequest(request);
message = intefCarInsService.underWirteInform(requestStr);
System.err.println(message);
} catch (Exception e) {
e.printStackTrace();
}
retMap.put("ResponseCode", "0");
retMap.put("ErrorMessage", "");
pw.write(JSONObject.fromObject(retMap).toString());
}
public class HttpContextUtils {
public static HttpServletRequest getHttpServletRequest() {
return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
}
/**
* 从输入流里获取请求字符串
* @param req
* @return
* @throws IOException
*/
public static String getStrFromRequest(HttpServletRequest req) throws Exception {
//拿到字节流
ServletInputStream servletInputStream = req.getInputStream();
//以 UTF-8 的编码格式 拿到字符流
InputStreamReader inputStreamReader = new InputStreamReader(servletInputStream,"UTF-8");
//把字符流加到缓冲流，以便提高读取效率
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
String readStr = null;
StringBuffer str = new StringBuffer();
while((readStr = bufferedReader.readLine()) != null){
str.append(readStr);
}
bufferedReader.close();
inputStreamReader.close();
servletInputStream.close();
// System.err.println(JSONObject.fromObject(str.toString()));
return str.toString();
}
}
