山东网站制作哪家好,搜索引擎中 哪些网站可以获得更好的排名,小白wordpress 知乎,湘潭网站推广前后端传参经常容易出错#xff0c;本文记录开发springBootMybatis-plusvuecli项目中出现的传参问题及解决办法 1.前后端没有跨域配置#xff0c;报错 解决方法#xff1a;后端进行跨域配置#xff0c;拷贝CorsConfig类
package com.example.xxxx.config;import org.spr… 前后端传参经常容易出错本文记录开发springBootMybatis-plusvuecli项目中出现的传参问题及解决办法 1.前后端没有跨域配置报错 解决方法后端进行跨域配置拷贝CorsConfig类
package com.example.xxxx.config;import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;/*** 全局配置可跨域访问api接口*/Configuration
public class CorsConfig {private CorsConfiguration buildConfig() {CorsConfiguration corsConfiguration new CorsConfiguration();corsConfiguration.addAllowedOrigin(*); //允许任何域名corsConfiguration.addAllowedHeader(*); //允许任何头corsConfiguration.addAllowedMethod(*); //允许任何方法return corsConfiguration;}Beanpublic CorsFilter corsFilter() {UrlBasedCorsConfigurationSource source new UrlBasedCorsConfigurationSource();source.registerCorsConfiguration(/**, buildConfig()); //注册return new CorsFilter(source);}
}
2.longtext类型 前端json内容包含转义字符报错 WARN 9296 --- [nio-8090-exec-4] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Illegal unquoted character ((CTRL-CHAR, code 10)): has to be escaped using backslash to be included in string value; nested exception is com.fasterxml.jackson.databind.JsonMappingException: Illegal unquoted character ((CTRL-CHAR, code 10)): has to be escaped using backslash to be included in string valueEOL at [Source: (org.springframework.util.StreamUtils$NonClosingInputStream); line: 2, column: 15] (through reference chain: com.example.memo.entity.Note[content])] 出现原因Json 字符中有有些字段比如空格、反斜杠、换行符等一些特殊字符但是 Json 框架没有对这些字符进行处理就会导致出现错误。
解决方法加入 fastjson 依赖 dependencygroupIdcom.alibaba/groupIdartifactIdfastjson/artifactIdversion1.2.78/version/dependency在配置文件中加入
springjackson:parser:allow-unquoted-control-chars: true重启项目运行成功
