XML数据读取——Digester简单使用

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一、POM

<dependency><groupId>commons-digester</groupId><artifactId>commons-digester</artifactId><version>2.1</version>
</dependency>

二、XML文件准备

<?xml version="1.0" encoding="UTF-8"?>
<webTemplate-methods><method><name>toListJSP</name><id>toListJSP</id><discribe>列表页面跳转Controller</discribe><jimport>org.springframework.web.bind.annotation.RequestMapping;org.springframework.web.bind.annotation.RequestMethod;</jimport><jbean></jbean><comment>/*** **/</comment><body><![CDATA[  @RequestMapping(value = "/to${className?cap_first}ListJSP",method =RequestMethod.GET)public String to${className?cap_first}ListJSP(){return "${className}/${className}ListJSP";}]]></body></method><method><name>searchListMethod</name><id>searchListMethod</id><discribe>列表数据查询Controller</discribe><jimport>java.util.Map;java.util.HashMap;org.springframework.web.bind.annotation.RequestMapping;org.springframework.web.bind.annotation.RequestMethod;org.springframework.web.bind.annotation.ResponseBody;</jimport><jbean>private ${packagePath}.service.${className?cap_first}Service ${className}Service;</jbean><comment>/*** **/</comment><body><![CDATA[  @RequestMapping(value = "/searchListMethod", method = RequestMethod.GET)@ResponseBodypublic Map<String, Object> search${className?cap_first}ListMethod(){Map<String , Object> map = new HashMap<String , Object>();map.put("list",${className}Service.queryAll());return map;}]]></body></method><method><name>toAddJSP</name><id>toAddJSP</id><discribe>数据添加页面跳转Controller</discribe><jimport>org.springframework.web.bind.annotation.RequestMapping;org.springframework.web.bind.annotation.RequestMethod;</jimport><jbean></jbean><comment>/*** **/</comment><body><![CDATA[  @RequestMapping(value = "/toAdd${className?cap_first}JSP",method = RequestMethod.GET)public String toAdd${className?cap_first}JSP(){return "${className}/${className}AddJSP";}]]></body></method><method><name>addMethod</name><id>addMethod</id><discribe>数据添加处理Controller</discribe><jimport>java.util.Map;java.util.HashMap;org.springframework.web.bind.annotation.RequestMapping;org.springframework.web.bind.annotation.RequestMethod;org.springframework.web.bind.annotation.RequestBody;org.springframework.web.bind.annotation.ResponseBody;</jimport><jbean>private ${packagePath}.service.${className?cap_first}Service ${className}Service;</jbean><comment>/*** **/</comment><body><![CDATA[  @RequestMapping(value = "/add${className?cap_first}Method",method =RequestMethod.POST)@ResponseBodypublic Map<String, Object> add${className?cap_first}Method(@RequestBody ${packagePath}.entity.${className?cap_first} ${className}){Map <String ,Object> map =new HashMap<String ,Object>();int flag = ${className}Service.add(${className});if(flag>0){map.put("msg","SUCCESS");}else{map.put("msg","FAILED");}return map;}]]></body></method><method><name>toUpdateJSP</name><id>toUpdateJSP</id><discribe>数据更新页面跳转Controller</discribe><jimport>org.springframework.web.bind.annotation.RequestMapping;org.springframework.web.bind.annotation.RequestMethod;</jimport><jbean></jbean><comment>/*** **/</comment><body><![CDATA[  @RequestMapping(value = "/toUpdate${className?cap_first}JSP",method =RequestMethod.GET)public String toUpdate${className?cap_first}JSP(){return "${className}/${className}UpdateJSP";}]]></body></method><method><name>queryByIdMethod</name><id>queryByIdMethod</id><discribe>数据更新页面数据获取Controller</discribe><jimport>org.springframework.web.bind.annotation.RequestMapping;org.springframework.web.bind.annotation.RequestMethod;org.springframework.web.bind.annotation.ResponseBody;</jimport><jbean>private ${packagePath}.service.${className?cap_first}Service ${className}Service;</jbean><comment>/*** **/</comment><body><![CDATA[  @RequestMapping(value = "/query${className?cap_first}ByIdMethod",method =RequestMethod.GET)@ResponseBodypublic Map<String,Object> query${className?cap_first}ByIdMethod(Integer id){Map <String ,Object> map = new HashMap<String, Object>();map.put("data",${className}Service.queryById(id));return map;}]]></body></method><method><name>updateMethod</name><id>updateMethod</id><discribe>数据更新处理Controller</discribe><jimport>java.util.Map;java.util.HashMap;org.springframework.web.bind.annotation.RequestMapping;org.springframework.web.bind.annotation.RequestMethod;org.springframework.web.bind.annotation.RequestBody;org.springframework.web.bind.annotation.ResponseBody;</jimport><jbean>private ${packagePath}.service.${className?cap_first}Service ${className}Service;</jbean><comment>/*** **/</comment><body><![CDATA[  @RequestMapping(value = "/update${className?cap_first}Method",method =RequestMethod.POST)@ResponseBodypublic Map<String, Object> update${className?cap_first}Method(@RequestBody ${packagePath}.entity.${className?cap_first} ${className}){Map <String ,Object> map = new HashMap<String, Object>();int flag =${className}Service.update(${className});if(flag>0){map.put("msg","SUCCESS");}else{map.put("msg","FAILED");}return map;}]]></body></method><method><name>deleteMethod</name><id>deleteMethod</id><discribe>数据删除处理Controller</discribe><jimport>java.util.Map;java.util.HashMap;org.springframework.web.bind.annotation.RequestMapping;org.springframework.web.bind.annotation.RequestMethod;org.springframework.web.bind.annotation.RequestParam;org.springframework.web.bind.annotation.ResponseBody;</jimport><jbean>private ${packagePath}.service.${className?cap_first}Service ${className}Service;</jbean><comment>/*** **/</comment><body><![CDATA[  @RequestMapping(value = "/delete${className?cap_first}Method",method =RequestMethod.GET)@ResponseBodypublic Map<String, Object> delete${className?cap_first}Method(@RequestParam String id){Map <String ,Object> map = new HashMap<String ,Object>();int flag = ${className}Service.delete(Integer.parseInt(id));if(flag>0){map.put("msg","SUCCESS");}else{map.put("msg","FAILED");}return map;}]]></body></method><method><name>deletesMethod</name><id>deletesMethod</id><discribe>数据批量删除处理Controller</discribe><jimport>java.util.Map;java.util.HashMap;org.springframework.web.bind.annotation.RequestMapping;org.springframework.web.bind.annotation.RequestMethod;org.springframework.web.bind.annotation.RequestParam;org.springframework.web.bind.annotation.ResponseBody;</jimport><jbean>private ${packagePath}.service.${className?cap_first}Service ${className}Service;</jbean><comment>/*** **/</comment><body><![CDATA[  @RequestMapping(value = "/deletes${className?cap_first}Method",method =RequestMethod.GET)@ResponseBodypublic Map<String, Object> deletes${className?cap_first}Method(@RequestParam List<Integer> ids){Map <String ,Object> map = new HashMap<String ,Object>();int flag = ${className}Service.deletes(ids);map.put("msg","SUCCESS");return map;}]]></body></method><method><name>fileDownLoadMethod</name><id>fileDownLoadMethod</id><discribe>文件下载Controller</discribe><jimport>java.io.FileInputStream;java.io.IOException;java.io.InputStream;java.io.OutputStream;org.springframework.web.bind.annotation.RequestMapping;org.springframework.web.bind.annotation.RequestMethod;javax.servlet.http.HttpServletRequest;javax.servlet.http.HttpServletResponse;org.springframework.web.context.ContextLoader;cn.com.panji.common.util.FileUtils;</jimport><jbean></jbean><comment>/*** **/</comment><body><![CDATA[  @RequestMapping(value ="/${className}/FileDownLoadMethod",method =RequestMethod.GET)public void fileDownLoadMethod(HttpServletRequest request, HttpServletResponse response) {String filePath = (String)request.getParameter("filepath");String fileName = (String)request.getParameter("filename");response.setContentType(ContextLoader.getCurrentWebApplicationContext().getServletContext().getMimeType(fileName));response.setHeader("Content-Disposition","attachment;filename*=utf-8'zh_cn'" + fileName);try {InputStream in =new FileInputStream(filePath);OutputStream out = response.getOutputStream();int b;while ((b = in.read()) != -1) {out.write(b);}in.close();out.flush();out.close();} catch (IOException e) {e.printStackTrace();}}]]></body></method><method><name>fileUpLoadMethod</name><id>fileUpLoadMethod</id><discribe>文件上传Controller</discribe><jimport>java.io.File;java.util.HashMap;java.util.Map;org.springframework.web.bind.annotation.RequestMapping;org.springframework.web.bind.annotation.RequestMethod;org.springframework.web.bind.annotation.RequestParam;javax.servlet.http.HttpServletRequest;javax.servlet.http.HttpServletResponse;org.springframework.web.multipart.MultipartFile;cn.com.panji.common.util.FileUtils;</jimport><jbean></jbean><comment>/*** **/</comment><body><![CDATA[ @RequestMapping(value ="/${className?cap_first}/FileUpLoadMethod",method= RequestMethod.GET)@ResponseBodypublic Map<String ,Object>fileUpLoadMethod(HttpServletRequest request,HttpServletResponse response,@RequestParam("file") MultipartFile file) {Map<String ,Object> map = new HashMap<String ,Object>();File saveFile =FileUtils.saveFile(file, FileUtils.getRootPath(this) + "/loadFile/");if(null!=saveFile){map.put("msg","SUCCESS");}else{map.put("msg","FAILED");}return map;}]]></body></method><method><name>searchByIdMethod</name><id>searchByIdMethod</id><discribe>数据查询--By Id--Controller</discribe><jimport>java.util.Map;java.util.HashMap;org.springframework.web.bind.annotation.RequestMapping;org.springframework.web.bind.annotation.RequestMethod;org.springframework.web.bind.annotation.ResponseBody;</jimport><jbean>private ${packagePath}.service.${className?cap_first}Service ${className}Service;</jbean><comment>/*** **/</comment><body><![CDATA[  @RequestMapping(value = "/searchByIdMethod", method = RequestMethod.GET)@ResponseBodypublic Map<String, Object> search${className?cap_first}ByIdMethod(@RequestParam String id){Map<String , Object> map = new HashMap();map.put("data",${className}Service.queryById(Integer.parseInt(id)));return map;}]]></body></method>
</webTemplate-methods>

View Code

三、创建映射对象

package cn.com.panji.common.resourcemanager.bean.web;import java.util.ArrayList;
import java.util.List;import lombok.Data;/** Web资源文件方法集合* * @author */
@Data
public class WebTemplateMethods {private List<WebTemplateMethod> methods = new ArrayList<>();public List<WebTemplateMethod> getMethods() {return methods;}public void setMethods(List<WebTemplateMethod> methods) {this.methods = methods;}public void addWebTemplateMethod(WebTemplateMethod method) {methods.add(method);}
}

集合类

package cn.com.panji.common.resourcemanager.bean.web;import java.util.Arrays;
import java.util.List;import cn.com.panji.common.util.StringUtils;
import lombok.Data;/** Web资源文件方法实体* * @author */
@Data
public class WebTemplateMethod {private String name;private String discribe;private String id;private String comment;private String jimport;private String jbean;private String body;public String getBody() {// body.replace("&lt;", "<");// body.replace("&gt;", ">");return body;}public void setBody(String body) {this.body = body;}public String getDiscribe() {return discribe;}public void setDiscribe(String discribe) {this.discribe = discribe;}public String getComment() {return comment;}public void setComment(String comment) {this.comment = comment;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getJimport() {return jimport;}public List<String> getJimportList() {jimport = StringUtils.removeAllBlank(jimport);return Arrays.asList(jimport.split(";"));}public void setJimport(String jimport) {this.jimport = jimport;}public String getJbean() {return jbean;}public List<String> getJbeanList() {jbean = StringUtils.trim(jbean);return Arrays.asList(jbean.split(";"));}public void setJbean(String jbean) {this.jbean = jbean;}public String getId() {return id;}public void setId(String id) {this.id = id;}}

封装类

四、Digester解析配置与应用

package cn.com.panji.common.resourcemanager.api.impl;import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;import org.apache.commons.digester.Digester;
import org.xml.sax.SAXException;import cn.com.panji.common.resourcemanager.ResourceEnum;
import cn.com.panji.common.resourcemanager.api.TemplateXMLReader;
import cn.com.panji.common.resourcemanager.bean.web.WebTemplateMethod;
import cn.com.panji.common.resourcemanager.bean.web.WebTemplateMethods;public class WebTemplateXMLReader extends TemplateXMLReader {static final String WEB_TEMPLEATE_XML_PATH = "resourceTemplates/"+ ResourceEnum.XML_TEMPLATE_WEB.getResourceTemplatePath() + ".xml";private  WebTemplateMethods methods = null;private WebTemplateXMLReader() {configDigester();parse();}@Overridepublic void configDigester() {this.digester = new Digester();this.digester.setValidating(false);// 配置映射this.digester.addObjectCreate("webTemplate-methods", WebTemplateMethods.class);this.digester.addObjectCreate("webTemplate-methods/method", WebTemplateMethod.class);this.digester.addBeanPropertySetter("webTemplate-methods/method/name", "name");this.digester.addBeanPropertySetter("webTemplate-methods/method/id", "id");this.digester.addBeanPropertySetter("webTemplate-methods/method/discribe", "discribe");this.digester.addBeanPropertySetter("webTemplate-methods/method/jimport", "jimport");this.digester.addBeanPropertySetter("webTemplate-methods/method/jbean", "jbean");this.digester.addBeanPropertySetter("webTemplate-methods/method/comment", "comment");this.digester.addBeanPropertySetter("webTemplate-methods/method/body", "body");this.digester.addSetNext("webTemplate-methods/method", "addWebTemplateMethod");}@Overridepublic void parse() {try {methods = (WebTemplateMethods) this.digester.parse(this.getClass().getClassLoader().getResourceAsStream(WEB_TEMPLEATE_XML_PATH));} catch (IOException | SAXException e) {e.printStackTrace();}}@Overridepublic WebTemplateMethod findResource(String id) {for (WebTemplateMethod m : methods.getMethods()) {if (id.equals(m.getId())) {return m;}}return null;}@Overridepublic Object findResourceMap(String[] ids) {Map<String, WebTemplateMethod> map = new HashMap<>();List<String> idList = Arrays.asList(ids);for (WebTemplateMethod m : methods.getMethods()) {if (idList.contains(m.getId())) {map.put(m.getId(), m);}}return map;}@Overridepublic Object findResourceList(String[] ids) {List<WebTemplateMethod> list = new ArrayList<WebTemplateMethod>();List<String> idList = Arrays.asList(ids);for (WebTemplateMethod m : methods.getMethods()) {if (idList.contains(m.getId())) {list.add(m);}}return list;}public static TemplateXMLReader getInstance() {return new WebTemplateXMLReader();}
}

View Code

WebTemplateMethod web = (WebTemplateMethod) TemplateReaderFactory.getTemplateXMLReaderInstance(ResourceEnum.XML_TEMPLATE_WEB).findResource("updateMethod");

五、解释及注意事项

　　1.XML结构应与映射对象层次结构相同，解析时，可解析到最末端元素，关于List数据，使用事件驱动器进行反射，当扫描到元素时，调动相应的Add方法。

　　2.Digester使用反射Setter方式进行属性注入，需要保证存在有效的Setter方法。

　　3.项目中可用该方式实现更加清晰的项目参数配置文件以及解析。

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>关于节点属性数据获取等内容后续更新

转载于:https://www.cnblogs.com/virgoart/p/10481611.html

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