java主機部署SSL的301跳轉
Java主機部署SSL時，可以通過以下步驟實現301跳轉：
1.為Java應用服務器安裝SSL證書，并按照官方文檔配置SSL，確保SSL證書可以正確地工作。
2.在應用服務器中配置重定向規則，將HTTP請求重定向到HTTPS地址，可以使用重定向過濾器實現，以下是使用Servlet Filter實現HTTP到HTTPS的重定向示例：
```java
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class HttpsRedirectFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {}
@Override
public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) req;
HttpServletResponse response = (HttpServletResponse) res;
String url = request.getRequestURL().toString();
// 301 redirect to HTTPS
if (url.startsWith("http://")) {
// retrieve protocol from header X-Forwarded-Proto
String proto = request.getHeader("X-Forwarded-Proto");
if (proto == null || !proto.equalsIgnoreCase("https")) {
String redirectUrl = "https://" + request.getServerName() + request.getRequestURI();
if (request.getQueryString() != null) redirectUrl += "?" + request.getQueryString();
response.setStatus(HttpServletResponse.SC_MOVED_PERMANENTLY);
response.setHeader("Location", redirectUrl);
return;
}
}
chain.doFilter(req, res);
}
@Override
public void destroy() {}
}
```
3.將Filter注冊到應用程序的web.xml文件中，示例代碼如下：
```xml
