struts2.0校验使用
一：重写validatepublic class LoginAction extends ActionSupport{ private String username; private String password; public String getUsername(){ return username; } public void setUsername(String username){ this.username = username; } public String getPassword(){ return password; } public void setPassword(String password){ this.password = password; }public String execute() throws Exception{ if (getUsername().equals("scott") && getPassword().equals("tiger") ){ActionContext.getContext().getSession().put("user" , getUsername()); return SUCCESS; }else{ return ERROR; } }public void validate(){if (getUsername() == null || getUsername().trim().equals("")){addFieldError("username", getText("user.required"));}if (getPassword() == null || getPassword().trim().equals("")){addFieldError("password", getText("pass.required"));}}}
二：页面
<s:form action="Login"> <s:textfield name="username" key="user"/> <s:textfield name="password" key="pass"/> <s:submit key="login"/></s:form>
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