今天遇到一個很惡心的問題卖局，從ios發(fā)過來的post請求怎么都無法識別，可是在web端發(fā)送確實(shí)很正常的茅坛。過程如下：

1.在chrome瀏覽器里隨便打開一個網(wǎng)頁案怯，F(xiàn)12打開控制臺，然后植入jquery

var fileref=document.createElement('script'); 

fileref.setAttribute("type","text/javascript"); 

fileref.setAttribute("src", 'http://libs.baidu.com/jquery/1.9.1/jquery.js'); 

document.getElementsByTagName("head")[0].appendChild(fileref); 

2.發(fā)送post請求

$.post(    
     "http://192.168.2.4/app/api/blackList/query/name",   
      {name: "王剛", currentPage: "1"},
      function (txt) {
        console.log(txt);
      }
)

返回的數(shù)據(jù)正常：

Paste_Image.png

通過打斷點(diǎn)調(diào)試發(fā)現(xiàn)江场，

ios端發(fā)來的請求>content-type：application/json
web方式發(fā)來的請求>content-type:application/x-www-form-urlencoded; charset=UTF-8

到這里纺酸，問題就好解決了，前者是一個字符串址否，可以在代碼里加上@RequestBody實(shí)現(xiàn)轉(zhuǎn)換餐蔬，同時，將web傳遞的content-type修改一下即可（不能直接使用$.post佑附，這對于開發(fā)者而言可不夠友好）

$.ajax(
  {
   type: "post",
   contentType:"application/json",
   url: "http://192.168.2.4/app/api/blackList/query/name",
   data: JSON.stringify({name:"王剛",currentPage:"1"}),
   success: function(data){
      console.log(data)
    }
 }
)

斟酌再三樊诺，決定還是保留對傳統(tǒng)web端jquery.post()方式的支持，同時支持ios序列化傳遞過來的參數(shù)音同，第一版先進(jìn)行header判斷词爬，遇到application/json的content-type，就從request取出inputstream权均，手動轉(zhuǎn)化
controller的代碼如下：

@ApiOperation(value = "姓名查詢", notes = "首次訪問時currentPage傳1")
@ApiImplicitParams({
       @ApiImplicitParam(name = "name", value = "名稱", required = true, dataType = "String"), 
       @ApiImplicitParam(name = "currentPage", value = "當(dāng)前是第幾頁", required = true, dataType = "String")})
@PostMapping(value = "/api/blackList/query/name")
public String nameQuery(BlackListParam param, HttpServletRequest request) throws IOException {
    String contentType = request.getHeader("Content-Type");
    if (contentType.endsWith("application/x-www-form-urlencoded")) {
    } else if (contentType.endsWith("application/json")) {
        String string = HttpToolkit.getContent(request.getInputStream(), "UTF-8");
        param = mapper.readValue(string, BlackListParam.class);
    }
    logger.info("進(jìn)入nameQuery,name=" + param.getName() + "&currentPage=" + param.getCurrentPage());
    int currentPageInt = Integer.parseInt(param.getCurrentPage());
    String result = blackListApiService.nameQuery(param.getName(), currentPageInt);
    return result;}

HttpToolkit里面的getContent部分的代碼：

public static String getContent(InputStream is, String charset) {
    String pageString = null;
    InputStreamReader isr = null;
    BufferedReader br = null;
    StringBuffer sb = null;
    try {
        isr = new InputStreamReader(is, charset);
        br = new BufferedReader(isr);
        sb = new StringBuffer();
        String line = null;
        while ((line = br.readLine()) != null) {
            sb.append(line + "\n");
        }
        pageString = sb.toString();
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        try {
            if (is != null){
                is.close();
            }
            if(isr!=null){
                isr.close();
            }
            if(br!=null){
                br.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        sb = null;
    }
    return pageString;
}