Struts1的校验方式

来源：互联网发布：微电影拍摄知乎编辑：程序博客网时间：2024/05/21 15:43

第一类：传统的校验方式

public ActionForward execute(ActionMapping mapping, ActionForm form,
           HttpServletRequest request, HttpServletResponse response)
           throws Exception {
       PersonForm personForm = (PersonForm)form;
       request.setAttribute("perForm", personForm);
       Map<String ,String> errors = new HashMap<String, String>();
       if(validate(errors, personForm)){
           request.setAttribute("errors", errors);
           return mapping.findForward("input");
       }
       Person person = new Person();
       BeanUtils.copyProperties(person, personForm);
       return null;
   }

   private boolean validate(Map<String ,String> errors , PersonForm personForm){
       if(personForm.getName() == null){
           errors.put("name", "姓名是必须的.");
       }
       if(personForm.getBirthday() == null){
           errors.put("birthday", "生日是必须的.");
       }
       return errors.size() > 0 ? true : false;
   }

jsp 中的取值

<body>
    <p>${errors}</p>
    <form action="${ctx}/person/save.do" method="post">
      <p>姓名:<input type="text" name="name" value="${perForm.name}"/> ${errors["name"]} </p>
      <p>性别:<select name="gender">
            <option value="1" ${perForm.gender == 1 ? "selected=\"selected\"" : ""}>男</option>
            <option value="2" ${perForm.gender == 2 ? "selected=\"   selected\"" : ""}>女</option>
         </select>
      </p>
      <p>体重:<input type="text" name="weight" value="${perForm.weight}"/></p>
      <p>生日:<input type="text" name="birthday" value="${perForm.birthday}"/> ${errors["birthday"]}</p>
      <p><input type="submit" value="Submit"/></p>
    </form>
</body>

配置文件中

第二类：struts1 中的校验方式

public class PersonForm extends ActionForm {
   private static final long serialVersionUID = 4583316882219621916L;
   private String name;
   private Integer gender;
   private BigDecimal weight;
   private String birthday;
   private Integer[] checkedIds;
   public String getName() {
       return name;
   }
   public void setName(String name) {
       this.name = name;
   }
   public Integer getGender() {
       return gender;
   }
   public void setGender(Integer gender) {
       this.gender = gender;
   }
   public BigDecimal getWeight() {
       return weight;
   }
   public void setWeight(BigDecimal weight) {
       this.weight = weight;
   }
   public String getBirthday() {
       return birthday;
   }
   public void setBirthday(String birthday) {
       this.birthday = birthday;
   }
   public Integer[] getCheckedIds() {
       return checkedIds;
   }
   public void setCheckedIds(Integer[] checkedIds) {
       this.checkedIds = checkedIds;
   }
   @Override
   public ActionErrors validate(ActionMapping mapping,
           HttpServletRequest request) {
       System.out.println("PersonForm.validate()");
       ActionErrors errors = new ActionErrors();
       if(name == null) {
           errors.add("name" , new ActionMessage("姓名是必须的." , false));
       }
       if(birthday == null){
           errors.add("birthday" , new ActionMessage("生日是必须的." , false));
       }
       System.out.println(errors);
       //Globals.ERROR_KEY = "org.apache.struts.action.ERROR"
       //request.setAttribute(Globals.ERROR_KEY , errors);
       return errors;
   }
}

jsp 中

<body>
    <p>${requestScope["org.apache.struts.action.ERROR"]}</p>
    <form action="${ctx}/person/save.do" method="post">
      <p>姓名:<input type="text" name="name" value="${requestScope.perForm.name}"/> </p>
      <p>性别:<select name="gender">
            <option value="1" >男</option>
            <option value="2" >女</option>
         </select>
      </p>
      <p>体重:<input type="text" name="weight" value="${requestScope.perForm.weight}"/></p>
      <p>生日:<input type="text" name="birthday" value="${requestScope.perForm.weight}"/> </p>
      <p><input type="submit" value="Submit"/></p>
    </form>
</body>

配置文件中

<action path="/person/save" name="personForm" input="/person/saveForm.do" scope="request" attribute="perForm" validate="true"
type="org.itfuture.examples.web.struts.action.PersonSaveAction">
</action>
validate="true" 由于多个action 会同时用一个FormBean 但不是每一个都需要进行数据验证所以action 中的validate="true" 是指定该action是否使用校验。

Struts1的校验方式

第一类：传统的校验方式

第二类 ：struts1 中的校验方式

第二类：struts1 中的校验方式