首先web.xml中的配置
<servlet>
<servlet-name>servletmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:servletmvc-servlet.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>servletmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
servletmvc-servlet.xml配置文件
<mvc:annotation-driven></mvc:annotation-driven>
<context:component-scan base-package="com.hopu">
</context:component-scan>
//视图解析
<bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
创建一个测试用的javabean
private Integer uid;
private String name;
private String pwd;
public Integer getUid() {
return uid;
}
public void setUid(Integer uid) {
this.uid = uid;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPwd() {
return pwd;
}
public void setPwd(String pwd) {
this.pwd = pwd;
}
接下来写你要用到的表单验证
public class MyValidtor implements Validator {
@Override
public boolean supports(Class<?> clas) {
return User.class.equals(clas);
}
@Override
public void validate(Object obj, Errors errors) {
ValidationUtils.rejectIfEmpty(errors,"name","", "用户名不能为空");
ValidationUtils.rejectIfEmpty(errors,"pwd", "" , "密码不能为空");
}
}
在@Controller中
@InitBinder
public void initBinder(WebDataBinder binder) {
binder.addValidators(new MyValidtor());
}
@RequestMapping("/login")
public String login(@Validated User user,Errors errors) {
if(errors.getErrorCount()>0) {
return "index";
}
return "index";
}
创建jsp页面
//使用form标签
<%@taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<form:form action="login1" modelAttribute="user" method="post">
<table>
<tr>
<td><form:input path="name"/><form:errors path="name"/></td>
</tr>
<tr>
<td><input type="text" name="pwd"/><form:errors path="pwd"/></td>
</tr>
<tr>
<td><input type="submit" value="login"/></td>
</tr>
</table>
</form:form>
完事