Java 异常：org.springframework.web.bind.MissingServletRequestParameterException：所需的字符串参数“params”不存在
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Exception: org.springframework.web.bind.MissingServletRequestParameterException: Required String parameter 'params' is not present
提问by Vanan
When i clicked the edit button the values from dataTable should display in form. But somehow it doesn't work. Below are my codes for reference.
当我单击编辑按钮时，dataTable 中的值应显示在表单中。但不知何故它不起作用。下面是我的代码供参考。
Call DataTable:
调用数据表：
$("#tranTable").on("click", "#edit", function(){
var row = $(this).closest("tr");
$("#Own-Account").removeClass("hidden");
$("fieldset#addToListMethod").addClass("hidden");
$("fieldset#Own-Account #templateTrxId").val( row.find("[name$=templateTrxId]").val() )
$("fieldset#Own-Account #templateId") .val( row.find("[name$=templateId]").val() )
$("fieldset#newFT #fromAccNo") .val( row.find("[name$=fromAccNo]").val() ),
$("fieldset#newFT #methodOfTransfer") .val( row.find("[name$=methodOfTransfer]").val() ),
$("fieldset#Own-Account #toAccNo") .val( row.find("[name$=toAccNo]").val() ),
$("fieldset#Own-Account #paymentRef") .val( row.find("[name$=paymentRef]").val() ),
$("fieldset#Own-Account #amount") .val( row.find("[name$=amount]").val() ),
//hidden
$("fieldset#Own-Account #otherPaymentDetail").val( row.find("[name$=otherPaymentDetail]").val() ),
$("fieldset#Own-Account #email1").val( row.find("[name$=email1]").val() ),
$("fieldset#Own-Account #email2").val( row.find("[name$=email2]").val() ),
$("fieldset#Own-Account #sms1").val( row.find("[name$=sms1]").val() ),
$("fieldset#Own-Account #sms2").val( row.find("[name$=sms2]").val() ),
$("fieldset#Own-Account #purpose").val( row.find("[name$=purpose]").val() )
$("fieldset#Own-Account #isEdit").val(1);
$("fieldset#Own-Account #dataTableRowId").val(row.data("row-id"));
});
采纳答案by FreezY
From the exception,your problem are likely to be found because the @RequestMappingdoesn't found the parameter being send from previous page.
由于@RequestMapping没有找到从上一页发送的参数，因此很可能会发现您的问题。
In this case is likely like this:
在这种情况下可能是这样的：
@RequestMapping(value = "/check")
public String getID(@RequestParam(value = "params") String params){
//your logic code here
}
From here,the exception come when the @RequestMappingdoesnt found "params":
从这里开始，当未@RequestMapping找到时出现异常"params"：
@RequestParam(value = "params") String params
This happen because by default @RequestParamwill try to get the value and return an exception when the value was not found.
发生这种情况是因为默认情况下@RequestParam会尝试获取该值并在未找到该值时返回异常。
So you have two ways to resolve this,
所以你有两种方法可以解决这个问题，
1) You can supply the URL /checkwith paramsvariable or,
1) 您可以提供/check带有params变量的 URL ，或者，
2) You can change the @RequestParamrequirement to false like this:
2）您可以@RequestParam像这样将要求更改为false：
@RequestParam(value = "params", required = false) String params
Take note that this is example to reflect your scenario and problem. Gud luk.
请注意，这是反映您的场景和问题的示例。咕噜。
回答by RotS
I had the same error message. My mistake was that I wrote on Javascript side:
我有同样的错误信息。我的错误是我在 Javascript 方面写的：
MyService.getStatus(vm.id);
instead of:
代替：
MyService.getStatus({id : vm.id});
so the parameter was not named as expected on Java side:
所以参数在 Java 端没有按预期命名：
@GetMapping("/myservice/getStatus")
@Timed
public ResponseEntity<String> getStatus(@RequestParam("id") Long id) {
