我有一个视图（jsp），它使用jquery来显示/隐藏某些字段。我正在使用jquery使用ajax将数据发布到控制器（spring mvc）。当我只是在页面中输入值时工作正常，但如果我点击一个链接取消隐藏2个文本框，输入值到它们然后发送到控制器我得到了这个例外。我已经检查了spring日志，我可以看到所有属性都被转换为与spring绑定但很快就引发了异常。以下是我在日志中可以看到的内容。我已多次检查所有参数，并且在jsp / js / java中没有遗漏/拼写错误。任何帮助将不胜感激
19:40:16,875 DEBUG GenericConversionService:254 - Caching under ConverterCacheKey [sourceType = java.lang.String, targetType = @org.springframework.web.bind.annotation.RequestParam java.lang.String]
java.lang.String -> java.lang.Number : org.springframework.core.convert.support.StringToNumberConverterFactory@21e8bf76
19:40:17,640 DEBUG GenericConversionService:186 - Converted to 540
19:40:17,644 DEBUG GenericConversionService:139 - Checking if I can convert java.lang.String to @org.springframework.web.bind.annotation.RequestParam int
19:40:17,646 DEBUG GenericConversionService:358 - Searching for converters indexed by sourceType [java.lang.String]
19:40:17,647 DEBUG GenericConversionService:429 - and indexed by targetType [java.lang.Integer]
19:40:17,649 DEBUG GenericConversionService:473 - Found matchable converters java.lang.String -> @org.springframework.format.annotation.NumberFormat java.lang.Integer: org.springframework.format.number.NumberFormatAnnotationFormatterFactory@4a6ca1a6
19:40:17,651 DEBUG GenericConversionService:560 - Matching java.lang.String -> @org.springframework.format.annotation.NumberFormat java.lang.Integer: org.springframework.format.number.NumberFormatAnnotationFormatterFactory@4a6ca1a6
19:40:17,653 DEBUG GenericConversionService:570 - Did not match converter java.lang.String -> @org.springframework.format.annotation.NumberFormat java.lang.Integer: org.springframework.format.number.NumberFormatAnnotationFormatterFactory@4a6ca1a6
19:40:17,654 DEBUG GenericConversionService:429 - and indexed by targetType [java.lang.Comparable]
19:40:17,656 DEBUG GenericConversionService:429 - and indexed by targetType [java.lang.Number]
19:40:17,658 DEBUG GenericConversionService:473 - Found matchable converters java.lang.String -> java.lang.Number : org.springframework.core.convert.support.StringToNumberConverterFactory@21e8bf76
19:40:17,660 DEBUG GenericConversionService:576 - Matched converter java.lang.String -> java.lang.Number : org.springframework.core.convert.support.StringToNumberConverterFactory@21e8bf76
19:40:17,661 DEBUG GenericConversionService:254 - Caching under ConverterCacheKey [sourceType = java.lang.String, targetType = @org.springframework.web.bind.annotation.RequestParam int]
19:40:17,663 DEBUG GenericConversionService:147 - Yes, I can convert
19:40:17,665 DEBUG GenericConversionService:159 - Converting value '1380' of java.lang.String to @org.springframework.web.bind.annotation.RequestParam int
19:40:17,667 DEBUG GenericConversionService:246 - Matched cached converter java.lang.String -> java.lang.Number : org.springframework.core.convert.support.StringToNumberConverterFactory@21e8bf76
19:40:17,668 DEBUG GenericConversionService:186 - Converted to 1380
19:40:17,672 DEBUG GenericConversionService:139 - Checking if I can convert java.lang.String to @org.springframework.web.bind.annotation.RequestParam int
19:40:17,673 DEBUG GenericConversionService:358 - Searching for converters indexed by sourceType [java.lang.String]
19:40:17,675 DEBUG GenericConversionService:429 - and indexed by targetType [java.lang.Integer]
19:40:17,677 DEBUG GenericConversionService:473 - Found matchable converters java.lang.String -> @org.springframework.format.annotation.NumberFormat java.lang.Integer: org.springframework.format.number.NumberFormatAnnotationFormatterFactory@4a6ca1a6
19:40:17,679 DEBUG GenericConversionService:560 - Matching java.lang.String -> @org.springframework.format.annotation.NumberFormat java.lang.Integer: org.springframework.format.number.NumberFormatAnnotationFormatterFactory@4a6ca1a6
19:40:17,680 DEBUG GenericConversionService:570 - Did not match converter java.lang.String -> @org.springframework.format.annotation.NumberFormat java.lang.Integer: org.springframework.format.number.NumberFormatAnnotationFormatterFactory@4a6ca1a6
19:40:17,682 DEBUG GenericConversionService:429 - and indexed by targetType [java.lang.Comparable]
19:40:17,684 DEBUG GenericConversionService:429 - and indexed by targetType [java.lang.Number]
19:40:17,685 DEBUG GenericConversionService:473 - Found matchable converters java.lang.String -> java.lang.Number : org.springframework.core.convert.support.StringToNumberConverterFactory@21e8bf76
19:40:17,687 DEBUG GenericConversionService:576 - Matched converter java.lang.String -> java.lang.Number : org.springframework.core.convert.support.StringToNumberConverterFactory@21e8bf76
19:40:17,689 DEBUG GenericConversionService:254 - Caching under ConverterCacheKey [sourceType = java.lang.String, targetType = @org.springframework.web.bind.annotation.RequestParam int]
19:40:17,691 DEBUG GenericConversionService:147 - Yes, I can convert
19:40:17,693 DEBUG GenericConversionService:159 - Converting value '540' of java.lang.String to @org.springframework.web.bind.annotation.RequestParam int
19:40:17,694 DEBUG GenericConversionService:246 - Matched cached converter java.lang.String -> java.lang.Number : org.springframework.core.convert.support.StringToNumberConverterFactory@21e8bf76
19:40:17,696 DEBUG GenericConversionService:186 - Converted to 540
19:40:17,699 DEBUG GenericConversionService:139 - Checking if I can convert java.lang.String to @org.springframework.web.bind.annotation.RequestParam int
19:40:17,701 DEBUG GenericConversionService:358 - Searching for converters indexed by sourceType [java.lang.String]
19:40:17,703 DEBUG GenericConversionService:429 - and indexed by targetType [java.lang.Integer]
19:40:17,705 DEBUG GenericConversionService:473 - Found matchable converters java.lang.String -> @org.springframework.format.annotation.NumberFormat java.lang.Integer: org.springframework.format.number.NumberFormatAnnotationFormatterFactory@4a6ca1a6
19:40:17,707 DEBUG GenericConversionService:560 - Matching java.lang.String -> @org.springframework.format.annotation.NumberFormat java.lang.Integer: org.springframework.format.number.NumberFormatAnnotationFormatterFactory@4a6ca1a6
19:40:17,708 DEBUG GenericConversionService:570 - Did not match converter java.lang.String -> @org.springframework.format.annotation.NumberFormat java.lang.Integer: org.springframework.format.number.NumberFormatAnnotationFormatterFactory@4a6ca1a6
19:40:17,710 DEBUG GenericConversionService:429 - and indexed by targetType [java.lang.Comparable]
19:40:17,712 DEBUG GenericConversionService:429 - and indexed by targetType [java.lang.Number]
19:40:17,713 DEBUG GenericConversionService:473 - Found matchable converters java.lang.String -> java.lang.Number : org.springframework.core.convert.support.StringToNumberConverterFactory@21e8bf76
19:40:17,715 DEBUG GenericConversionService:576 - Matched converter java.lang.String -> java.lang.Number : org.springframework.core.convert.support.StringToNumberConverterFactory@21e8bf76
19:40:17,717 DEBUG GenericConversionService:254 - Caching under ConverterCacheKey [sourceType = java.lang.String, targetType = @org.springframework.web.bind.annotation.RequestParam int]
19:40:17,719 DEBUG GenericConversionService:147 - Yes, I can convert
19:40:17,720 DEBUG GenericConversionService:159 - Converting value '1380' of java.lang.String to @org.springframework.web.bind.annotation.RequestParam int
19:40:17,722 DEBUG GenericConversionService:246 - Matched cached converter java.lang.String -> java.lang.Number : org.springframework.core.convert.support.StringToNumberConverterFactory@21e8bf76
19:40:17,724 DEBUG GenericConversionService:186 - Converted to 1380
19:40:17,727 DEBUG GenericConversionService:139 - Checking if I can convert java.lang.String to @org.springframework.web.bind.annotation.RequestParam int
19:40:17,729 DEBUG GenericConversionService:358 - Searching for converters indexed by sourceType [java.lang.String]
19:40:17,731 DEBUG GenericConversionService:429 - and indexed by targetType [java.lang.Integer]
19:40:17,732 DEBUG GenericConversionService:473 - Found matchable converters java.lang.String -> @org.springframework.format.annotation.NumberFormat java.lang.Integer: org.springframework.format.number.NumberFormatAnnotationFormatterFactory@4a6ca1a6
19:40:17,734 DEBUG GenericConversionService:560 - Matching java.lang.String -> @org.springframework.format.annotation.NumberFormat java.lang.Integer: org.springframework.format.number.NumberFormatAnnotationFormatterFactory@4a6ca1a6
19:40:17,736 DEBUG GenericConversionService:570 - Did not match converter java.lang.String -> @org.springframework.format.annotation.NumberFormat java.lang.Integer: org.springframework.format.number.NumberFormatAnnotationFormatterFactory@4a6ca1a6
19:40:17,737 DEBUG GenericConversionService:429 - and indexed by targetType [java.lang.Comparable]
19:40:17,739 DEBUG GenericConversionService:429 - and indexed by targetType [java.lang.Number]
19:40:17,741 DEBUG GenericConversionService:473 - Found matchable converters java.lang.String -> java.lang.Number : org.springframework.core.convert.support.StringToNumberConverterFactory@21e8bf76
19:40:17,743 DEBUG GenericConversionService:576 - Matched converter java.lang.String -> java.lang.Number : org.springframework.core.convert.support.StringToNumberConverterFactory@21e8bf76
19:40:17,744 DEBUG GenericConversionService:254 - Caching under ConverterCacheKey [sourceType = java.lang.String, targetType = @org.springframework.web.bind.annotation.RequestParam int]
19:40:17,746 DEBUG GenericConversionService:147 - Yes, I can convert
19:40:17,748 DEBUG GenericConversionService:159 - Converting value '540' of java.lang.String to @org.springframework.web.bind.annotation.RequestParam int
19:40:17,750 DEBUG GenericConversionService:246 - Matched cached converter java.lang.String -> java.lang.Number : org.springframework.core.convert.support.StringToNumberConverterFactory@21e8bf76
19:40:17,780 DEBUG GenericConversionService:186 - Converted to 540
19:40:17,784 DEBUG GenericConversionService:139 - Checking if I can convert java.lang.String to @org.springframework.web.bind.annotation.RequestParam int
19:40:17,786 DEBUG GenericConversionService:358 - Searching for converters indexed by sourceType [java.lang.String]
19:40:17,788 DEBUG GenericConversionService:429 - and indexed by targetType [java.lang.Integer]
19:40:17,790 DEBUG GenericConversionService:473 - Found matchable converters java.lang.String -> @org.springframework.format.annotation.NumberFormat java.lang.Integer: org.springframework.format.number.NumberFormatAnnotationFormatterFactory@4a6ca1a6
19:40:17,792 DEBUG GenericConversionService:560 - Matching java.lang.String -> @org.springframework.format.annotation.NumberFormat java.lang.Integer: org.springframework.format.number.NumberFormatAnnotationFormatterFactory@4a6ca1a6
19:40:17,794 DEBUG GenericConversionService:570 - Did not match converter java.lang.String -> @org.springframework.format.annotation.NumberFormat java.lang.Integer: org.springframework.format.number.NumberFormatAnnotationFormatterFactory@4a6ca1a6
19:40:17,795 DEBUG GenericConversionService:429 - and indexed by targetType [java.lang.Comparable]
19:40:17,797 DEBUG GenericConversionService:429 - and indexed by targetType [java.lang.Number]
19:40:17,799 DEBUG GenericConversionService:473 - Found matchable converters java.lang.String -> java.lang.Number : org.springframework.core.convert.support.StringToNumberConverterFactory@21e8bf76
19:40:17,800 DEBUG GenericConversionService:576 - Matched converter java.lang.String -> java.lang.Number : org.springframework.core.convert.support.StringToNumberConverterFactory@21e8bf76
19:40:17,802 DEBUG GenericConversionService:254 - Caching under ConverterCacheKey [sourceType = java.lang.String, targetType = @org.springframework.web.bind.annotation.RequestParam int]
19:40:17,804 DEBUG GenericConversionService:147 - Yes, I can convert
19:40:17,806 DEBUG GenericConversionService:159 - Converting value '1380' of java.lang.String to @org.springframework.web.bind.annotation.RequestParam int
19:40:17,807 DEBUG GenericConversionService:246 - Matched cached converter java.lang.String -> java.lang.Number : org.springframework.core.convert.support.StringToNumberConverterFactory@21e8bf76
19:40:17,809 DEBUG GenericConversionService:186 - Converted to 1380
19:40:17,812 DEBUG HandlerMethodInvoker:173 - Invoking request handler method: public com.zeater.guru.admin.command.ResultVO com.zeater.guru.admin.controller.RestaurantController.addRestaurant(java.lang.String,java.lang.String,java.lang.String,int,java.lang.String,java.lang.String,java.lang.String,java.lang.String,int,int,int,float,float,int,float,boolean,boolean,int,java.lang.String,java.lang.String,java.lang.String,int,int,int,int,int,int,int,int,int,int,int,int,int,int,org.springframework.ui.Model)
19:40:17,815 DEBUG AnnotationMethodHandlerExceptionResolver:132 - Resolving exception from handler [com.zeater.guru.admin.controller.RestaurantController@144683c2]: java.lang.IllegalArgumentException
19:40:17,818 DEBUG ResponseStatusExceptionResolver:132 - Resolving exception from handler [com.zeater.guru.admin.controller.RestaurantController@144683c2]: java.lang.IllegalArgumentException
19:40:17,820 DEBUG DefaultHandlerExceptionResolver:132 - Resolving exception from handler [com.zeater.guru.admin.controller.RestaurantController@144683c2]: java.lang.IllegalArgumentException
19:40:17,822 DEBUG DispatcherServlet:667 - Cleared thread-bound request context: org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestWrapper@188edd79
19:40:17,824 DEBUG DispatcherServlet:671 - Could not complete request
java.lang.IllegalArgumentException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:426)
答案 0 :(得分：1)
非常感谢完整的堆栈跟踪。问题可能是，spring无法转换您的方法参数之一。你应该重构那个方法，它有太多的参数。您可以创建一个包装所有参数的dto（Spring提供的参数除外）。
编辑：
而不是使用大量@RequestParam注释。您可以将所有方法参数包装在一个包装器对象（DTO）中。
实施例：
public class MyWrapperDTO {
private String someStrValue;
private String anotherStrValue;
private int someIntValue;
// getters/setters omitted
}
从这里您可以选择2个选项：使用@ModelAttribute或@RequestBody
第一个：
@Controller
public class Controller {
@RequestMapping(value = "/mypage/view")
public ModelAndView viewPage() {
MyWrapperDTO dto = new MyWrapperDTO();
// you could provide default values for your form here
return new ModelAndView("/mypage").
.addObject("form", dto);
}
@RequestMapping(value = "/mypage/save", method = RequestMethod.POST)
@ResponseBody
public void doSomething(@ModelAttribute("form") MyWrapperDTO dto) {
// process your ajax call here
// do something
}
}
你的jsp应该是这样的：
<spring:url var="myAjaxCall" value="/mypage/save" />
<!-- you should use spring form tag -->
<form:form commandName="form" action="${myAjaxCall}">
<form:input path="someStrValue"></form:input>
<form:input path="anotherStrValue"></form:input>
<form:input path="someIntValue"></form:input>
<input type="submit" value="Submit"></input>
</form:form>
第二个选项（@RequestBody），假设您正在发送一个JSON对象（这涉及一些jquery）：
@Controller
public class Controller {
@RequestMapping(value = "/mypage/view")
public ModelAndView viewPage() {
MyWrapperDTO dto = new MyWrapperDTO();
// you could provide default values for your form here
return new ModelAndView("/mypage").
.addObject("form", dto);
}
@RequestMapping(value = "/mypage/save", method = RequestMethod.POST)
@ResponseBody
public void doSomething(@RequestBody MyWrapperDTO dto) {
// process your ajax call here
// do something
}
}
为你的jsp：
<spring:url var="myAjaxCall" value="/mypage/save" />
<script type="text/javascript">
$(document).ready(function() {
$(document).on('click', '#submit', function() {
// not the best way to do it
var data = {
'someStrValue': $('#someStrValue').val(),
'anotherStrValue': $('#anotherStrValue').val(),
'someIntValue': $('#someIntValue').val()
};
// use jQuery.ajax
jQuery.ajax({
'data': JSON.stringify(data),
'type': 'POST',
'ur': '${myAjaxCall}',
'success': function(data) {
// yehey!
}
});
});
});
</script>
<!-- you should use spring form tag -->
<form:form commandName="form">
<form:input id="someStrValue" path="someStrValue"></form:input>
<form:input id="anotherStrValue" path="anotherStrValue"></form:input>
<form:input id="someIntValue" path="someIntValue"></form:input>
<button id="submit" type="button">Submit</button>
</form:form>
Spring将处理对包装器对象的转换/绑定。第二个选项要求您在类路径中使用jackson。