From 84f9354d4ec06612f7ba82b7929c7b3d29785f2c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=B5=B5=E4=BF=8A?= <873019219@qq.com>
Date: Mon, 20 Sep 2021 16:17:16 +0800
Subject: [PATCH] =?UTF-8?q?:sparkles:=20=E5=AF=B9=E4=BA=8E=E5=9B=A0?=
 =?UTF-8?q?=E5=89=8D=E7=AB=AF=20vue=20history=20=E8=B7=AF=E7=94=B1?=
 =?UTF-8?q?=E6=A8=A1=E5=BC=8F=E4=B8=8B,=20=E7=9B=B4=E6=8E=A5=E8=AE=BF?=
 =?UTF-8?q?=E9=97=AE=E8=B7=AF=E5=BE=84=E6=97=B6,=20=E5=87=BA=E7=8E=B0?=
 =?UTF-8?q?=E7=9A=84=20404=20=E5=93=8D=E5=BA=94=E7=A0=81,=20=E8=BD=AC?=
 =?UTF-8?q?=E5=8C=96=E4=B8=BA=20200=20=E5=93=8D=E5=BA=94=E7=A0=81.=20(404?=
 =?UTF-8?q?=20=E4=B8=8B=E4=BC=9A=E5=B0=86=E8=AF=B7=E6=B1=82=E8=BD=AC?=
 =?UTF-8?q?=E5=8F=91=E5=88=B0=E9=A6=96=E9=A1=B5)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/main/java/im/zhaojun/zfile/config/WebMvcConfig.java   | 2 ++
 src/main/java/im/zhaojun/zfile/filter/NotFoundFilter.java | 1 +
 2 files changed, 3 insertions(+)
 create mode 100644 src/main/java/im/zhaojun/zfile/filter/NotFoundFilter.java

diff --git a/src/main/java/im/zhaojun/zfile/config/WebMvcConfig.java b/src/main/java/im/zhaojun/zfile/config/WebMvcConfig.java
index 08aa2f0..38a7d04 100644
--- a/src/main/java/im/zhaojun/zfile/config/WebMvcConfig.java
+++ b/src/main/java/im/zhaojun/zfile/config/WebMvcConfig.java
@@ -42,8 +42,10 @@ public class WebMvcConfig implements WebMvcConfigurer {
     public WebServerFactoryCustomizer<ConfigurableWebServerFactory> webServerFactoryCustomizer(){
         return factory -> {
             ErrorPage error404Page = new ErrorPage(HttpStatus.NOT_FOUND, "/index.html");
+            ErrorPage error200Page = new ErrorPage(HttpStatus.OK, "/index.html");
             Set<ErrorPage> errorPages = new HashSet<>();
             errorPages.add(error404Page);
+            errorPages.add(error200Page);
             factory.setErrorPages(errorPages);
         };
     }
diff --git a/src/main/java/im/zhaojun/zfile/filter/NotFoundFilter.java b/src/main/java/im/zhaojun/zfile/filter/NotFoundFilter.java
new file mode 100644
index 0000000..1be90a1
--- /dev/null
+++ b/src/main/java/im/zhaojun/zfile/filter/NotFoundFilter.java
@@ -0,0 +1 @@
+package im.zhaojun.zfile.filter;

import cn.hutool.core.util.ReflectUtil;
import org.apache.catalina.connector.Response;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * 对于因前端 vue history 路由模式下, 直接访问路径时, 出现的 404 响应码, 转化为 200 响应码. (404 下会将请求转发到首页)
 */
@Order(0)
@WebFilter(value = "/*")
@Component
public class NotFoundFilter implements Filter {

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        // 执行请求
        chain.doFilter(request, response);

        // 拿到返回值, 如果是 404, 则转为 200
        Response res = (Response) ReflectUtil.getFieldValue(response, "response");
        if (res != null) {
            //  修改状态，默认情况 放过调用链执行后 response.setStatus 失败
            res.setAppCommitted(false);
            res.setSuspended(false);

            HttpServletResponse httpServletResponse = (HttpServletResponse) response;
            httpServletResponse.setStatus(200);
        }
    }
}
\ No newline at end of file