struts2 ajax url参数,在Struts2拦截器中更改请求参数值(Changing request parameter value in Struts2 interceptor)…

在Struts2拦截器中更改请求参数值(Changing request parameter value in Struts2 interceptor)

有人知道是否可以在Struts2拦截器中更改/删除请求参数值？

请求参数Map是UnmodifiableMap一个实例，因此看起来它不能在拦截器中操作。

更新：

我正在使用Liferay，所以uParamsMap将是一个UnmodifiableMap

public String intercept(ActionInvocation invocation) throws Exception {

final ActionContext context = invocation.getInvocationContext();

PortletRequest request = (PortletRequest) context.get(REQUEST);

Map uParamsMap = request.getParameterMap();

return invocation.invoke();

}

Does anybody know if it is possible to change/remove request parameter values in a Struts2 interceptor?

The request parameter Map is an instance of UnmodifiableMap so it doesn’t look like it can be manipulated with in the interceptor.

UPDATE:

I’m using Liferay so uParamsMap will be an UnmodifiableMap

public String intercept(ActionInvocation invocation) throws Exception {

final ActionContext context = invocation.getInvocationContext();

PortletRequest request = (PortletRequest) context.get(REQUEST);

Map uParamsMap = request.getParameterMap();

return invocation.invoke();

}

原文：https://stackoverflow.com/questions/30076242

更新时间：2020-07-23 21:07

最满意答案

也许你可以试试这个。

public String intercept(ActionInvocation invocation) throws Exception {

final ActionContext context = invocation.getInvocationContext();

Map parameters = (Map)context.get(ActionContext.PARAMETERS);

Map parametersCopy = new HashMap();

parametersCopy.putAll(parameters);

parametersCopy.put(“myParam”, “changedValue”);

context.put(ActionContext.PARAMETERS, parametersCopy);

return invocation.invoke();

}

May be you can try as this.

public String intercept(ActionInvocation invocation) throws Exception {

final ActionContext context = invocation.getInvocationContext();

Map parameters = (Map)context.get(ActionContext.PARAMETERS);

Map parametersCopy = new HashMap();

parametersCopy.putAll(parameters);

parametersCopy.put(“myParam”, “changedValue”);

context.put(ActionContext.PARAMETERS, parametersCopy);

return invocation.invoke();

}