spring mvc无xml

Spring MVC无xml文件

项目结构

pom.xml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">    <modelVersion>4.0.0</modelVersion>    <groupId>com.xsh136</groupId>    <artifactId>explorer</artifactId>    <version>1.0-SNAPSHOT</version>    <packaging>war</packaging>    <dependencies>        <!--引入servlet-->        <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->        <dependency>            <groupId>javax.servlet</groupId>            <artifactId>javax.servlet-api</artifactId>            <version>3.1.0</version>            <scope>provided</scope>        </dependency>        <!-- https://mvnrepository.com/artifact/javax.servlet/jstl -->        <dependency>            <groupId>javax.servlet</groupId>            <artifactId>jstl</artifactId>            <version>1.2</version>        </dependency>        <!--引入spring mvc-->        <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-webmvc</artifactId>            <version>4.3.9.RELEASE</version>        </dependency>        <!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload -->        <dependency>            <groupId>commons-fileupload</groupId>            <artifactId>commons-fileupload</artifactId>            <version>1.3.1</version>        </dependency>        <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->        <dependency>            <groupId>com.fasterxml.jackson.core</groupId>            <artifactId>jackson-databind</artifactId>            <version>2.8.8</version>        </dependency>    </dependencies>    <build>        <plugins>            <plugin>                <groupId>org.apache.maven.plugins</groupId>                <artifactId>maven-compiler-plugin</artifactId>                <version>3.5.1</version>                <configuration>                    <source>1.8</source>                    <target>1.8</target>                </configuration>            </plugin>            <plugin>                <groupId>org.apache.tomcat.maven</groupId>                <artifactId>tomcat7-maven-plugin</artifactId>                <version>2.2</version>            </plugin>        </plugins>    </build></project>

配置

WEBConf.java

配置文件，继承 WebMvcConfigurerAdapter类，功能与

springmvc-config.xml

配置文件一样，类上应该加@Configuration、
@ComponentScan、
@EnableWebMvc三个注解，重写的方法应该加上@Bean注解

package com.xsh136.explorer.conf;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.ComponentScan;import org.springframework.context.annotation.Configuration;import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;import org.springframework.web.multipart.MultipartResolver;import org.springframework.web.multipart.commons.CommonsMultipartResolver;import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;import org.springframework.web.servlet.config.annotation.EnableWebMvc;import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;import org.springframework.web.servlet.view.InternalResourceViewResolver;import org.springframework.web.servlet.view.JstlView;/** * Created by ZWW on 2017/8/3. */@Configuration@ComponentScan(basePackages = {"com.xsh136.explorer.controller"})@EnableWebMvcpublic class WEBConf extends WebMvcConfigurerAdapter{    @Override    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {        super.configureDefaultServletHandling(configurer);        configurer.enable();    }    @Bean    public InternalResourceViewResolver viewResolver(){        InternalResourceViewResolver bean=new InternalResourceViewResolver();        bean.setViewClass(JstlView.class);        bean.setPrefix("/WEB-INF/jsp/");        bean.setSuffix(".jsp");        return bean;    }    @Bean("multipartResolver")    public MultipartResolver multipartResolver(){        CommonsMultipartResolver bean=new CommonsMultipartResolver();        bean.setDefaultEncoding("utf-8");        return bean;    }    @Bean    public MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter(){        MappingJackson2HttpMessageConverter bean=new MappingJackson2HttpMessageConverter();        return bean;    }}

MVCLoader类继承AbstractAnnotationConfigDispatcherServletInitializer类，实现其中的方法，修改getServletConfigClasses（）方法和getServletMappings()方法

package com.xsh136.explorer.conf;import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;/** * Created by ZWW on 2017/8/3. */public class MVCLoader extends AbstractAnnotationConfigDispatcherServletInitializer{    @Override    protected Class<?>[] getRootConfigClasses() {        return new Class<?>[0];    }    @Override    protected Class<?>[] getServletConfigClasses() {        return new Class<?>[]{WEBConf.class};    }    @Override    protected String[] getServletMappings() {        return new String[]{"/"};    }}

编写ExplorerController类，加@Controller、
@RequestMapping注解，代码如下：

package com.xsh136.explorer.controller;import com.xsh136.explorer.tree.TreeNodeMy;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody;import javax.swing.filechooser.FileSystemView;import java.io.File;import java.io.FileFilter;import java.text.DecimalFormat;import java.text.SimpleDateFormat;import java.util.*;/** * Created by ZWW on 2017/8/3. */@Controller@RequestMapping("/explorer")public class ExplorerController {    FileSystemView fsv=FileSystemView.getFileSystemView();    SimpleDateFormat sdf=new SimpleDateFormat("yyyy/MM/dd HH:mm");    DecimalFormat df=new DecimalFormat("###,####");    @RequestMapping("/hello")    public String hello(){        return "hello";    }    @RequestMapping("/tree")    @ResponseBody    public List<TreeNodeMy> tree(String id){        List<TreeNodeMy> treeNodeMies =new ArrayList<>();        File[] files=null;        if(id==null){            files=File.listRoots();        }else {            files=new File(id).listFiles(new FileFilter() {                @Override                public boolean accept(File pathname) {                    return pathname.isDirectory();                }            });        }        if(files!=null){            for(File file:files){                treeNodeMies.add(new TreeNodeMy(file.getAbsolutePath(),fsv.getSystemDisplayName(file)));            }        }        return treeNodeMies;    }    @RequestMapping("/list")    @ResponseBody    public List<Map<String,String>> list(String id){        List<Map<String,String>> datas=new ArrayList<>();        File[] files=null;        if(id!=null){            files=new File(id).listFiles();        }        if(files!=null){            for(File file:files){                Map<String,String> map=new HashMap<>();                map.put("name",fsv.getSystemDisplayName(file));                map.put("modifyDate",sdf.format(new Date(file.lastModified())));                map.put("type",fsv.getSystemTypeDescription(file));                String size="";                if(file.isFile()){                    size=df.format(file.length());                    map.put("size",size+"B");                }                datas.add(map);            }        }        return datas;    }}

编写TreeNodeMy类，用于显示目录树结构

package com.xsh136.explorer.tree;/** * Created by ZWW on 2017/8/3. */public class TreeNodeMy {    private String id;    private String text;    private String state="closed";    public TreeNodeMy(String id, String text) {        this.id = id;        this.text = text;    }    public TreeNodeMy() {    }    public String getId() {        return id;    }    public void setId(String id) {        this.id = id;    }    public String getText() {        return text;    }    public void setText(String text) {        this.text = text;    }    public String getState() {        return state;    }    public void setState(String state) {        this.state = state;    }}

采用easyui来进行界面显示，需要导入响应的文件，在WEB-INF下建立一个static文件夹，将所需要的文件加入进去
然后在webapp下建立一个html文件，代码如下

<!DOCTYPE html><html lang="en"><head>    <meta charset="UTF-8">    <title>Title</title>    <link rel="stylesheet" type="text/css" href="static/themes/icon.css">    <link rel="stylesheet" type="text/css" href="static/themes/default/easyui.css">    <script type="text/javascript" src="static/jquery.min.js"></script>    <script type="text/javascript" src="static/jquery.easyui.min.js"></script>    <script type="text/javascript">        $(function () {            $('#tree').tree({                url:'explorer/tree',                onClick: function(a){                   // alert(a.text);  // 在用户点击的时候提示                    $("#list").datagrid({                        queryParams:{                            id:a.id                        }                    })                }            });            $('#list').datagrid({                url:'explorer/list',                columns:[[                    {field:'name',title:'名称',width:100},                    {field:'modifyDate',title:'修改日期',width:100},                    {field:'type',title:'类型',width:100},                    {field:'size',title:'大小'}                ]]            });        })    </script></head><body class="easyui-layout">    <div data-options="region:'west',title:'目录树',iconCls:'icon-reload', split:true" style="width:300px;">        <ul id="tree">        </ul>    </div>    <div data-options="region:'center',title:'文件列表'" style="padding:5px;">        <table id="list"></table>    </div></body></html>