java主机部署SSL的301跳转
Java主机部署SSL时，可以通过以下步骤实现301跳转：
1.为Java应用服务器安装SSL证书，并按照官方文档配置SSL，确保SSL证书可以正确地工作。
2.在应用服务器中配置重定向规则，将HTTP请求重定向到HTTPS地址，可以使用重定向过滤器实现，以下是使用Servlet Filter实现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.将Filter注册到应用程序的web.xml文件中，示例代码如下：
```xml