SprinMVC转发、重定向、收集date数据、自定义转换器、文件上传、json数据转换
2018-11-03 23:26
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版权声明：本文为博主原创文章,版权归原作者小思所有，转载或者引用本文内容请注明来源及原作者 https://blog.csdn.net/zeal9s/article/details/83692167
1.项目模块图
2.完成SpringMVC的基本搭建
pom.xml（下载jar包的文件）
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <parent> <artifactId>SpringMVC</artifactId> <groupId>SpringMVC</groupId> <version>1.0-SNAPSHOT</version> </parent> <modelVersion>4.0.0</modelVersion> <groupId>SpringMVC_03</groupId> <artifactId>SpringMVC_03</artifactId> <version>1.0-SNAPSHOT</version> <packaging>war</packaging> <name>SpringMVC_03 Maven Webapp</name> <!-- FIXME change it to the project's website --> <url>http://www.example.com</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <maven.compiler.source>1.7</maven.compiler.source> <maven.compiler.target>1.7</maven.compiler.target> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.11</version> <scope>test</scope> </dependency> <!--引入SpringMVC依赖--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>4.3.10.RELEASE</version> </dependency> </dependencies> <build> <finalName>SpringMVC_03</finalName> <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) --> <plugins> <plugin> <artifactId>maven-clean-plugin</artifactId> <version>3.0.0</version> </plugin> <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging --> <plugin> <artifactId>maven-resources-plugin</artifactId> <version>3.0.2</version> </plugin> <plugin> <artifactId>maven-compiler-plugin</artifactId> <version>3.7.0</version> </plugin> <plugin> <artifactId>maven-surefire-plugin</artifactId> <version>2.20.1</version> </plugin> <plugin> <artifactId>maven-war-plugin</artifactId> <version>3.2.0</version> </plugin> <plugin> <artifactId>maven-install-plugin</artifactId> <version>2.5.2</version> </plugin> <plugin> <artifactId>maven-deploy-plugin</artifactId> <version>2.8.2</version> </plugin> </plugins> </pluginManagement> </build> </project>
springmvc.xml（核心配置文件）
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!--配置注解扫描器--> <context:component-scan base-package="com.zs.controller" /> <!--配置内部模型视图解析器--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/"></property> <property name="suffix" value=".jsp"></property> </bean> </beans>
web.xml
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" > <web-app> <display-name>Archetype Created Web Application</display-name> <servlet> <servlet-name>SpringMVC</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!--初始化参数，将springmvc的核心配置文件springmvc.xml初始化--> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>SpringMVC</servlet-name> <url-pattern>*.action</url-pattern> </servlet-mapping> </web-app>
MainController.java
package com.zs.controller;
import com.zs.entity.Point;
import com.zs.entity.Users;
import org.apache.commons.io.FileUtils;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.IOException;
import java.util.*;
/**
* @author 小思
* @PackageName:com.zs.controller
* @ClassName: MainController
* @Description:
* @date 2018/11/3 20:26
*/
//标明扫描器经过的类
@Controller
public class MainController {
//测试框架是否成功
@RequestMapping("test")
public String test(){
System.out.println("springmvc成功搭建");
return "index";
}
}
将项目发布到服务器上，然后访问http://localhost:8080/test.action看控制输出
则搭建SpringMVC成功
SprinMVC转发、重定向、收集date数据、自定义转换器、文件上传、json数据转换
转发
MainController.java
package com.zs.controller;
import com.zs.entity.Point;
import com.zs.entity.Users;
import org.apache.commons.io.FileUtils;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.IOException;
import java.util.*;
/**
* @author 小思
* @PackageName:com.zs.controller
* @ClassName: MainController
* @Description:
* @date 2018/11/3 20:26
*/
//标明扫描器经过的类
@Controller
public class MainController {
//测试框架是否成功
@RequestMapping("test")
public String test(){
System.out.println("springmvc成功搭建");
return "index";
}
//测试转发到jsp页面
@RequestMapping("testForword")
public String testForword(Map map){
map.put("uname","tomcat");
map.put("upwd","123456");
return "forward:TestForwardAndRedirect.jsp";
}
}
重新发布项目，浏览器访问http://localhost:8080/testForword.action
重定向
MainController.java
package com.zs.controller;
import com.zs.entity.Point;
import com.zs.entity.Users;
import org.apache.commons.io.FileUtils;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.IOException;
import java.util.*;
/**
* @author 小思
* @PackageName:com.zs.controller
* @ClassName: MainController
* @Description:
* @date 2018/11/3 20:26
*/
//标明扫描器经过的类
@Controller
public class MainController {
//测试重定向到页面
@RequestMapping("testRedirect")
public String testRedirect(Map map){
map.put("uname","tomcat");
map.put("upwd","123456");
return "redirect:TestForwardAndRedirect.jsp";
}
}
重新发布项目，浏览器访问http://localhost:8080/testRedirect.action
收集页面date类型数据
addUsers.jsp（收集数据的页面）
<%-- @Name: addUsers @Description: @author 小思 @date 2018/11/3 20:58 --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>测试页面收集date数据</title> </head> <body> <form action="/testDate.action" method="post"> 用户名：<input type="text" name="uname"><br> 生日：<input type="text" name="birthday"><br> <input type="submit" value="提交"> </form> </body> </html>
Users.java(包含date类型的属性的实体类,注意要date属性上要开启注解@DateTimeFormat(pattern =“yyyy-MM-dd”))
package com.zs.entity;
import org.springframework.format.annotation.DateTimeFormat;
import java.util.Date;
/**
* @author 小思
* @PackageName:com.zs.entity
* @ClassName: Users
* @Description:
* @date 2018/11/3 20:26
*/
public class Users {
private String uname;//用户名
@DateTimeFormat(pattern ="yyyy-MM-dd")
private Date birthday;//生日(不是一般的类型就要标明注解)
public String getUname() {
return uname;
}
public void setUname(String uname) {
this.uname = uname;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
public Users() {
}
public Users(String uname, Date birthday) {
this.uname = uname;
this.birthday = birthday;
}
@Override
public String toString() {
return "Users{" +
"uname=" + uname +
", birthday=" + birthday +
'}';
}
}
MainController.java
package com.zs.controller;
import com.zs.entity.Point;
import com.zs.entity.Users;
import org.apache.commons.io.FileUtils;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.IOException;
import java.util.*;
/**
* @author 小思
* @PackageName:com.zs.controller
* @ClassName: MainController
* @Description:
* @date 2018/11/3 20:26
*/
//标明扫描器经过的类
@Controller
public class MainController {
//测试页面收集data数据
@RequestMapping("testDate")
public String testDate(Users users){
System.out.println(users);
return "index";
}
}
在springmvc.xml添加注解驱动的配置和自定义转换器的配置
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!--配置注解扫描器--> <context:component-scan base-package="com.zs.controller" /> <!--配置内部模型视图解析器--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/"></property> <property name="suffix" value=".jsp"></property> </bean> <!--配置注解驱动--> <mvc:annotation-driven></mvc:annotation-driven> <!--配置自定义转换器--> <bean id="conversionService" class="org.springframework.context.support.ConversionServiceFactoryBean"> <property name="converters"> <bean class="com.zs.converter.PointConverter"></bean> </property> </bean> </beans>
重新发布项目，浏览器访问http://localhost:8080/addUsers.jsp
查看控制台
获取的时间可以进行格式化你想要的格式
获取页面不规则字符串
getPoint.jsp（以“120，1990”这种格式获取x和y轴为例）
<%-- @Name: getPoint @Description: @author 小思 @date 2018/11/3 21:16 --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>测试获取页面不规则字符串</title> </head> <body> <form action="/testPoint.action" method="post"> x轴，y轴：<input type="text" name="point"><br> <input type="submit" value="提交"> </form> </body> </html>
收集不规则字符串最后要设置到Point.java的实体类去
package com.zs.entity;
/**
* @author 小思
* @PackageName:com.zs.entity
* @ClassName: Point
* @Description:测试获取页面不规则字符串的实体类
* @date 2018/11/3 21:14
*/
public class Point {
private int x;//x轴
private int y;//y轴
public int getX() {
return x;
}
public void setX(int x) {
this.x = x;
}
public int getY() {
return y;
}
public void setY(int y) {
this.y = y;
}
public Point() {
}
public Point(int x, int y) {
this.x = x;
this.y = y;
}
@Override
public String toString() {
return "Point{" +
"x=" + x +
", y=" + y +
'}';
}
}
不规则字符串转换我们需要的Point对象
PointConverter.java(自定义转换器)
package com.zs.converter;
import com.zs.entity.Point;
import org.springframework.core.convert.converter.Converter;
/**
* @author 小思
* @PackageName:com.zs.converter
* @ClassName: PointConverter
* @Description:将getPoint.jsp收集的不规则字符串，截取，然后保存到对象中，Converter<String,Point>String是传进来的格式,Point是转换出去的格式
* @date 2018/11/3 21:21
*/
public class PointConverter implements Converter<String, Point> {
@Override
public Point convert(String s) {
//以逗号分割，获取x和y的值
String x_y[]=s.split(",");
int x=Integer.parseInt(x_y[0]);
int y=Integer.parseInt(x_y[1]);
Point p=new Point(x,y);
return p;
}
}
在springmvc.xml配置自定义转换器
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!--配置注解扫描器--> <context:component-scan base-package="com.zs.controller" /> <!--配置内部模型视图解析器--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/"></property> <property name="suffix" value=".jsp"></property> </bean> <!--配置注解驱动和自定义转换器--> <mvc:annotation-driven conversion-service="conversionService"></mvc:annotation-driven> <!--配置自定义转换器--> <bean id="conversionService" class="org.springframework.context.support.ConversionServiceFactoryBean"> <property name="converters"> <bean class="com.zs.converter.PointConverter"></bean> </property> </bean> </beans>
重新发布项目，浏览器访问http://localhost:8080/getPoint.jsp
控制台能按要求输出我们定义转换器的格式
文件上传
在pom.xml文件添加依赖
<!--引入文件上传的依赖--> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.3</version> </dependency> <!--引入servlet依赖--> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>4.0.1</version> <scope>provided</scope> </dependency>
fileUpload.jsp
<%-- @Name: FileUpload @Description: @author 小思 @date 2018/11/3 21:38 --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>测试文件上传</title> </head> <body> <form action="/testFileUpload.action" method="post" enctype="multipart/form-data"> <%--name必须和接收的方法的参数名保持一致，不然收集不到数据--%> <input type="file" name="multipartFile"><input type="submit" value="上传"> </form> </body> </html>
MainController.java
package com.zs.controller;
import com.zs.entity.Point;
import com.zs.entity.Users;
import org.apache.commons.io.FileUtils;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.IOException;
import java.util.*;
/**
* @author 小思
* @PackageName:com.zs.controller
* @ClassName: MainController
* @Description:
* @date 2018/11/3 20:26
*/
//标明扫描器经过的类
@Controller
public class MainController {
//测试文件上传
@RequestMapping("testFileUpload")
public String testFileUpload(MultipartFile multipartFile, HttpServletRequest request){
//输出文件名
System.out.println(multipartFile.getOriginalFilename());
//新建一个文件夹images保存上传的图片，真实存在的地址是服务器的发布地址
String path=request.getRealPath("/images");
System.out.println("项目在服务器的地址："+path);
File file=new File(path+"/"+multipartFile.getOriginalFilename());
try {
//使用文件帮助类复制获取的文件
FileUtils.copyInputStreamToFile(multipartFile.getInputStream(),file);
System.out.println("图片上传并下载成功！");
} catch (IOException e) {
e.printStackTrace();
}
return "index";
}
}
springmvc.xml(配置文件上传)
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!--配置注解扫描器--> <context:component-scan base-package="com.zs.controller" /> <!--配置内部模型视图解析器--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/"></property> <property name="suffix" value=".jsp"></property> </bean> <!--配置文件上传--> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="defaultEncoding" value="UTF-8"></property> <property name="maxUploadSize" value="2097152"></property> </bean> </beans>
重新发布项目，浏览器访问http://localhost:8080/fileUpload.jsp
控制台输出
获取json数据
在pom.xml添加依赖
<!--引入jackson的三个依赖（缺一不可）--> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.9.7</version> </dependency> <!--引入jackson的三个依赖（缺一不可）--> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>2.9.7</version> </dependency> <!--引入jackson的三个依赖（缺一不可）--> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>2.9.7</version> </dependency>
MainController.java
package com.zs.controller;
import com.zs.entity.Point;
import com.zs.entity.Users;
import org.apache.commons.io.FileUtils;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.IOException;
import java.util.*;
/**
* @author 小思
* @PackageName:com.zs.controller
* @ClassName: MainController
* @Description:
* @date 2018/11/3 20:26
*/
//标明扫描器经过的类
@Controller
public class MainController {
//测试返回需要的json数据
//返回的是json数据不是页面，故要加入@ResponseBody
@ResponseBody
@RequestMapping("getJson")
public Map<String,Object> getJson(){
Map<String,Object> map=new HashMap<>();
List<Users> list=new ArrayList<>();
list.add(new Users("张三",new Date()));
list.add(new Users("张大三",new Date()));
list.add(new Users("张中三",new Date()));
list.add(new Users("张小小三",new Date()));
map.put("total","10");
map.put("lists",list);
return map;
}
}
重新发布项目，浏览器访问http://localhost:8080/getJson.action
页面返回的Json数据
说在最后的话：编写实属不易，若喜欢或者对你有帮助记得点赞+关注或者收藏哦~
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