HttpServletRequest header 添加字段
时间: 2024-06-14 21:05:54 浏览: 14
可以通过使用自定义的HttpServletRequestWrapper类来实现向HttpServletRequest的header中添加字段。下面是一个示例代码:
```java
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
public class CustomHttpServletRequest extends HttpServletRequestWrapper {
private final String customHeaderName;
private final String customHeaderValue;
public CustomHttpServletRequest(HttpServletRequest request, String customHeaderName, String customHeaderValue) {
super(request);
this.customHeaderName = customHeaderName;
this.customHeaderValue = customHeaderValue;
}
@Override
public String getHeader(String name) {
if (customHeaderName.equalsIgnoreCase(name)) {
return customHeaderValue;
}
return super.getHeader(name);
}
}
```
在拦截器中,你可以使用CustomHttpServletRequest类来包装原始的HttpServletRequest对象,并在包装对象中添加自定义的header字段。下面是一个示例代码:
```java
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class CustomInterceptor implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
// 添加自定义的header字段
CustomHttpServletRequest customRequest = new CustomHttpServletRequest(request, "Custom-Header", "Custom-Value");
// 使用包装后的request对象继续处理请求
// ...
return true;
}
}
```
请注意,以上示例代码仅为演示目的,实际使用时需要根据具体的业务需求进行适当的修改。
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