一、场景描述：swagger导出文件名称乱码

场景描述：springboot项目集成swagger2.9.2后，下载文件时若文件名有中文则乱码。

（1）依赖如下：

<!--swagger2-->
<dependency>
	<groupId>io.springfox</groupId>
	<artifactId>springfox-swagger2</artifactId>
	<version>2.9.2</version>
</dependency>
<dependency>
	<groupId>io.springfox</groupId>
	<artifactId>springfox-swagger-ui</artifactId>
	<version>2.9.2</version>
</dependency>

（2）下载文件乱码如下：

（3）java代码如下：

@Controller
@RequestMapping("/file")
public class FileController {

    @GetMapping("/export1")
    public void printSubmit1( HttpServletResponse response) throws Exception {
        //获取模板位置
        InputStream templateFileName = getClass().getResourceAsStream("/template/dataSourceDetailExport.xlsx");
        String fileName = "测试文件";
        List<List<String>> dataList = new ArrayList<>();
        for(int i=0;i<3;i++){
            List<String> data = new ArrayList<>();
            for(int j=1;j<10;j++){
                data.add(i+""+j);
            }
            dataList.add(data);
        }
        try {
            //对文件名进行编码，防止中文乱码
            fileName = URLEncoder.encode(fileName, "UTF-8");
            response.setContentType("application/vnd.ms-excel");
            response.setCharacterEncoding("utf8");
            response.setHeader("Content-Disposition", "attachment; filename=" + fileName + ".xlsx");
            response.setHeader("Pragma", "public");
            response.setHeader("Cache-Control", "no-store");
            response.addHeader("Cache-Control", "max-age=0");
            OutputStream os = response.getOutputStream();
            EasyExcel.write(os).withTemplate(templateFileName).sheet().doWrite(dataList);;
        } catch (IOException e) {
            throw new Exception("导出excel表格失败!", e);
        }
    }
}

二、乱码原因

这是由于sweagger2.9.2版本问题导致的，在swagger2.9.2中下载是乱码的，但是直接在浏览器中输入请求下载就是正常的。

三、解决方法

3.1、方法一、在浏览器中输入地址下载

3.2、方法二、swagger升级为2.10.0及以上

需要将swagger升级为2.10.0及以上
重点：需要swagger包含的spring-plugin-core包是2.0.0.RELEASE版本，swagger包含的spring-plugin-metadata包是2.0.0.RELEASE版本

（1）依赖如下

<!--swagger2-->
<dependency>
	<groupId>io.springfox</groupId>
	<artifactId>springfox-spring-webmvc</artifactId>
	<version>2.10.0</version>
</dependency>
<dependency>
	<groupId>io.springfox</groupId>
	<artifactId>springfox-swagger2</artifactId>
	<version>2.10.0</version>
</dependency>
<dependency>
	<groupId>io.springfox</groupId>
	<artifactId>springfox-swagger-ui</artifactId>
	<version>2.10.0</version>
</dependency>

（2）swagger配置如下：

package com.demo.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2WebMvc;

import java.text.SimpleDateFormat;
import java.util.Date;

@Configuration
@EnableSwagger2WebMvc
public class SwaggerConfig
{


    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.demo")) //你自己的package
                .paths(PathSelectors.any())
                .build();
    }

    public ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("小工具"+"\t"+new SimpleDateFormat("yyyy-MM-dd").format(new Date()))
                .description("docker-compose")
                .version("1.0")
                .termsOfServiceUrl("")
                .build();
    }
}

（3）下载结果如下图

四、可能遇到的问题

4.1、DocumentationPluginsManager.java:152

Description:

An attempt was made to call a method that does not exist. The attempt was made from the following location:

springfox.documentation.spring.web.plugins.DocumentationPluginsManager.createContextBuilder(DocumentationPluginsManager.java:152)

The following method did not exist:

org.springframework.plugin.core.PluginRegistry.getPluginFor(Ljava/lang/Object;Lorg/springframework/plugin/core/Plugin;)Lorg/springframework/plugin/core/Plugin;

The method's class, org.springframework.plugin.core.PluginRegistry, is available from the following locations:

jar:file:/D:/maven/MavenRepository/org/springframework/plugin/spring-plugin-core/2.0.0.RELEASE/spring-plugin-core-2.0.0.RELEASE.jar!/org/springframework/plugin/core/PluginRegistry.class

The class hierarchy was loaded from the following locations:

org.springframework.plugin.core.PluginRegistry: file:/D:/maven/MavenRepository/org/springframework/plugin/spring-plugin-core/2.0.0.RELEASE/spring-plugin-core-2.0.0.RELEASE.jar


Action:

Correct the classpath of your application so that it contains a single, compatible version of org.springframework.plugin.core.PluginRegistry

若遇到以上问题，则先在swagger中排除以下依赖，并手动引入以下版本的依赖

<dependency>
	<artifactId>spring-plugin-core</artifactId>
	<groupId>org.springframework.plugin</groupId>
	<version>2.0.0.RELEASE</version>
</dependency>
<dependency>
	<artifactId>spring-plugin-metadata</artifactId>
	<groupId>org.springframework.plugin</groupId>
	<version>2.0.0.RELEASE</version>
</dependency>

注意： spring-plugin-core-2.0.0.RELEASE版本需要与swagger2.10.0及以上版本配合使用。若swagger版本为2.9.2及以下，需要用低版本的spring-plugin-core-1.2.0.RELEASE版本