Java: Spring前端传递列表和数组限制大小256问题

一、 出现场景

如果前端传递的参数是数组或者列表格式时，最大的限制是[256]，如果超过了这个限制就会报错

看下报错的类 DataBinder.java

public static final int DEFAULT_AUTO_GROW_COLLECTION_LIMIT = 256;

二、 解决方案

修改application.yml配置文件

server:max-http-header-size: 20000

增加配置项

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.support.ConfigurableWebBindingInitializer;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter;/*** Spring前端传递列表和数组限制大小256问题*/
@Configuration
public class ArrayLimitConfig {@Autowiredpublic ArrayLimitConfig(RequestMappingHandlerAdapter requestMappingHandlerAdapter) {requestMappingHandlerAdapter.setWebBindingInitializer(new MyWebBindingInitializer());}/*** 配置请求集合上限数量* @author* @version 2020-10-14*/public static class MyWebBindingInitializer extends ConfigurableWebBindingInitializer {@Overridepublic void initBinder(WebDataBinder binder) {super.initBinder(binder);binder.setAutoGrowNestedPaths(true);//配置集合上限数量binder.setAutoGrowCollectionLimit(10000);}}
}