spring提供了两个标签库文件:spring-form.tld(表单标签库,用于输出HTML表单) spring.tld(基础标签库,用于Spring数据绑定等)
使用步骤:
1,配置表单标签库,复制spring.tld到\WEB-INF目录下,并在web.xml中添加该标签库的引用:
/spring-form /WEB-INF/spring-form.tld
2,在JSP文件中引入标签:
<%@taglib prefix="form" uri="/spring-form"%>
3,在request中保存JavaBean.
1 public class User { 2 3 private String username="admin"; 4 private String password="1243"; 5 private String [] interests= {"Structs","Hibernate","Spring"}; 6 private String sex="M"; 7 public String getUsername() { 8 return username; 9 }10 public void setUsername(String username) {11 this.username = username;12 }13 public String getPassword() {14 return password;15 }16 public void setPassword(String password) {17 this.password = password;18 }19 public String[] getInterests() {20 return interests;21 }22 public void setInterests(String[] interests) {23 this.interests = interests;24 }25 public void setSex(String sex) {26 this.sex = sex;27 }28 29 }
然后在JSP页面中创建一个User对象,并保存在request对象中,命令为user;
<% User user= new User();
request.setAttribute("user",user);
%>
4,绑定JavaBean对象。
<form:form commandName="user"></form>
5,绑定JavaBean属性