spring mvc接收对象参数问题

[gxz0515]

class BankArray{
private Bank banks[] ;

public void setBanks(Bank[] banks) {
this.banks = banks;
}

public Bank[] getBanks() {
return banks;
}
}

//用 BankArray 作参数
@RequestMapping(value ="xxx" , method = RequestMethod.POST)
public ModelAndView doLogOut(BankArray param){ }

/* 页面用下面的方式 */
<input name="banks[0].name" value="name1" />
<input name="banks[0].address" value="address1" />

<input name="banks[1].name" value="name2" />
<input name="banks[1].address" value="address2" />

<input name="banks[2].name" value="name3" />
<input name="banks[2].address" value="address3" />

当数组个数大于256时，报错如下：

org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet dispatcher threw exception
java.lang.IndexOutOfBoundsException: Index: 256, Size: 256
at java.util.ArrayList.RangeCheck(ArrayList.java:547)
at java.util.ArrayList.get(ArrayList.java:322)
at org.springframework.beans.BeanWrapperImpl.getPropertyValue(BeanWrapperImpl.java:793)
at org.springframework.beans.BeanWrapperImpl.getNestedBeanWrapper(BeanWrapperImpl.java:576)
at org.springframework.beans.BeanWrapperImpl.getBeanWrapperForPropertyPath(BeanWrapperImpl.java:553)
at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:914)
at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:76)
at org.springframework.validation.DataBinder.applyPropertyValues(DataBinder.java:692)
at org.springframework.validation.DataBinder.doBind(DataBinder.java:588)
at org.springframework.web.bind.WebDataBinder.doBind(WebDataBinder.java:191)
at org.springframework.web.bind.ServletRequestDataBinder.bind(ServletRequestDataBinder.java:112)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter$ServletHandlerMethodInvoker.doBind(AnnotationMethodHandlerAdapter.java:797)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.doBind(HandlerMethodInvoker.java:813)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveHandlerArguments(HandlerMethodInvoker.java:367)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:171)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:439)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:427)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:915)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:822)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:643)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:796)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:879)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:617)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1774)
at java.lang.Thread.run(Thread.java:662)

[gxz0515]

数组个数不多 不会报错

[master_y]

这个情况不是很了解，我一般不会用数组，用List或者Set 你试试把private Bank banks[] 改成private List<Bank> banks或者private Set<Bank> banks试试

[RottenCode]

同求　困扰好久

[gxz0515]

问题是对象个数大于256时，直接Controller层都不进，是不是传递对象参数个数有限制？ 小于等于256可以。

[gxz0515]

问题已解决，默认大小256. 可以在你的Controller加上 @InitBinder public void initBinder(WebDataBinder binder) { binder.setAutoGrowCollectionLimit(1024); } 修改大小限制，即可。