spring-mvc限制前端传递list参数的长度为256

接收前端数据时发生如下错误：

org.springframework.beans.InvalidPropertyException: Invalid property 'cpaCpafCpnNewList[256]' of bean class [com.ufgov.entity.CpaCpafChgAttach]: Index of out of bounds in property path 'cpaCpafCpnNewList[256]'; nested exception is java.lang.IndexOutOfBoundsException: Index: 256, Size: 256at org.springframework.beans.BeanWrapperImpl.getPropertyValue(BeanWrapperImpl.java:832)at org.springframework.beans.BeanWrapperImpl.getNestedBeanWrapper(BeanWrapperImpl.java:571)at org.springframework.beans.BeanWrapperImpl.getBeanWrapperForPropertyPath(BeanWrapperImpl.java:548)at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:912)at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:82)at org.springframework.validation.DataBinder.applyPropertyValues(DataBinder.java:728)at org.springframework.validation.DataBinder.doBind(DataBinder.java:624)at org.springframework.web.bind.WebDataBinder.doBind(WebDataBinder.java:189)at org.springframework.web.bind.ServletRequestDataBinder.bind(ServletRequestDataBinder.java:106)at org.springframework.web.servlet.mvc.method.annotation.ServletModelAttributeMethodProcessor.bindRequestParameters(ServletModelAttributeMethodProcessor.java:153)at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument(ModelAttributeMethodProcessor.java:108)at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:79)at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:157)at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:124)at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:749)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:689)at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:938)at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870)at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:863)at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)at com.ufgov.util.LoginFilter.doFilter(LoginFilter.java:126)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)at com.ufgov.util.CharacterFilter.doFilter(CharacterFilter.java:34)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)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:241)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2441)at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2430)at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)at java.lang.Thread.run(Thread.java:662)Caused by: java.lang.IndexOutOfBoundsException: Index: 256, Size: 256at java.util.ArrayList.RangeCheck(ArrayList.java:547)at java.util.ArrayList.get(ArrayList.java:322)at org.springframework.beans.BeanWrapperImpl.getPropertyValue(BeanWrapperImpl.java:791)... 51 more

一看到256这个数字，就知道肯定是框架作祟。。。。。。

不知道为什么框架要做这样的限制。如下是限制的源头

public class DataBinder implements PropertyEditorRegistry, TypeConverter {/** Default object name used for binding: "target" */public static final String DEFAULT_OBJECT_NAME = "target";/** Default limit for array and collection growing: 256 */public static final int DEFAULT_AUTO_GROW_COLLECTION_LIMIT = 256;

百度一下，解决办法如下

在controller中重写如下方法：

    /**     * 解决spring-mvc限制前端传递list参数到后端时,限制长度256     * @param binder     */    @InitBinder    protected void initBinder(WebDataBinder binder) {        binder.setAutoGrowNestedPaths(true);        binder.setAutoGrowCollectionLimit(1024);    }

当然，如果controller有继承其它base的话，统一处理更好