反射中newInstance输入参数后报错argument type mismatch 求大神

我在输入6时,程序可以正常运行,但输入值为一个浮点数 如4.5时 会有argument type mismatch的错误
Example类
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reflect类
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1个回答

写成4.5f吧,4.5会被默认为是4.5d

0
xichen97
xichen97 谢谢老哥
11 个月之前 回复
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argument type mismatch错误,求助。。
自学了Java能有3个多月了吧,今天做web版本的crud操作,实现是没问题的。rn但是在处理ResultSet方面还想更方便一些,于是写了一个处理DQL操作的方法,通过传进去的ResultSet和需要封装对象的class字节码,来自动识别所有被封装的对象。但是在获取参数写入对象的时候报错了,搞了一上午没搞懂,在此求助![img=https://forum.csdn.net/PointForum/ui/scripts/csdn/Plugin/003/onion/3.gif][/img]rn[img=https://img-bbs.csdn.net/upload/201702/04/1486202092_953034.png][/img]rn[img=https://img-bbs.csdn.net/upload/201702/04/1486202108_849538.png][/img]
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工程目录:rn[img=https://img-bbs.csdn.net/upload/201408/15/1408091851_836047.jpg][/img]rnrn[img=https://img-bbs.csdn.net/upload/201408/15/1408091913_366641.jpg][/img]rnrn[img=https://img-bbs.csdn.net/upload/201408/15/1408091937_272951.jpg][/img]rnrnJUnit test case测试类里面的:rn[img=https://img-bbs.csdn.net/upload/201408/15/1408091946_891022.jpg][/img]rn然后把的错误是这样的rn[img=https://img-bbs.csdn.net/upload/201408/15/1408091967_444481.jpg][/img]
奇怪的错误argument type mismatch??
[code=XML]rn严重: Servlet.service() for servlet action threw exceptionrnjava.lang.IllegalArgumentException: argument type mismatchrn at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)rn at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)rn at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)rn at java.lang.reflect.Method.invoke(Method.java:597)rn at org.apache.commons.beanutils.PropertyUtils.setSimpleProperty(PropertyUtils.java:1789)rn at org.apache.commons.beanutils.PropertyUtils.setNestedProperty(PropertyUtils.java:1684)rn at org.apache.commons.beanutils.PropertyUtils.setProperty(PropertyUtils.java:1713)rn at org.apache.commons.beanutils.BeanUtils.setProperty(BeanUtils.java:1019)rn at org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:808)rn at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:493)rn at org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.java:816)rn at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:203)rn at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)rn at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)rn at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)rn at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)rn at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)rn at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)rn at com.bjsxt.oa.web.PagerFilter.doFilter(PagerFilter.java:25)rn at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)rn at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)rn at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:174)rn at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:77)rn at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)rn at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)rn at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:78)rn at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:77)rn at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)rn at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)rn at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)rn at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)rn at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)rn at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)rn at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)rn at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)rn at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)rn at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)rn at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)rn at java.lang.Thread.run(Thread.java:619)rnrn[/code]rnrnjsp:rn[code=HTML]rn 失效时间 rn rn
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