spring boot实现自动输出word文档功能的实例代码
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2022-03-17 22:41:00
spring boot实现自动输出word文档功能本文用到apache poi组件组件依赖在pom.xml文件中添加
spring boot实现自动输出word文档功能
本文用到apache poi组件
组件依赖在pom.xml文件中添加
<dependency> <groupid>org.apache.poi</groupid> <artifactid>poi</artifactid> <version>4.1.0</version> </dependency> <dependency> <groupid>org.apache.poi</groupid> <artifactid>poi-ooxml</artifactid> <version>4.1.0</version> </dependency>
首先创建相关的实体类、编写需要用到的sql查询。
import lombok.data; // 选择题实体 @data public class multiquestion { private integer questionid; private string subject; private string section; private string answera; private string answerb; private string answerc; private string answerd; private string question; private string level; private string rightanswer; private string analysis; //题目解析 private integer score; }
import lombok.data; //填空题实体类 @data public class fillquestion { private integer questionid; private string subject; private string question; private string answer; private integer score; private string level; private string section; private string analysis; //题目解析 }
import lombok.data; //判断题实体类 @data public class judgequestion { private integer questionid; private string subject; private string question; private string answer; private string level; private string section; private integer score; private string analysis; //题目解析 }
创建好要用到的实体类之后,利用mybatis写sql查询,可以分为两种:1、配置mapper.xml文件路径,在xml文件中编写sql语句。2、直接使用注解。本文使用方法为第二种。
@mapper public interface multiquestionmapper { /** * select * from multiquestions where questionid in ( * select questionid from papermanage where questiontype = 1 and paperid = 1001 * ) */ @select("select * from multi_question where questionid in (select questionid from paper_manage where questiontype = 1 and paperid = #{paperid})") list<multiquestion> findbyidandtype(integer paperid); @select("select * from multi_question") ipage<multiquestion> findall(page page); /** * 查询最后一条记录的questionid * @return multiquestion */ @select("select questionid from multi_question order by questionid desc limit 1") multiquestion findonlyquestionid(); @options(usegeneratedkeys = true,keyproperty = "questionid") @insert("insert into multi_question(subject,question,answera,answerb,answerc,answerd,rightanswer,analysis,section,level) " + "values(#{subject},#{question},#{answera},#{answerb},#{answerc},#{answerd},#{rightanswer},#{analysis},#{section},#{level})") int add(multiquestion multiquestion); @select("select questionid from multi_question where subject =#{subject} order by rand() desc limit #{pageno}") list<integer> findbysubject(string subject,integer pageno); }
//填空题 @mapper public interface fillquestionmapper { @select("select * from fill_question where questionid in (select questionid from paper_manage where questiontype = 2 and paperid = #{paperid})") list<fillquestion> findbyidandtype(integer paperid); @select("select * from fill_question") ipage<fillquestion> findall(page page); /** * 查询最后一条questionid * @return fillquestion */ @select("select questionid from fill_question order by questionid desc limit 1") fillquestion findonlyquestionid(); @options(usegeneratedkeys = true,keyproperty ="questionid" ) @insert("insert into fill_question(subject,question,answer,analysis,level,section) values " + "(#{subject,},#{question},#{answer},#{analysis},#{level},#{section})") int add(fillquestion fillquestion); @select("select questionid from fill_question where subject = #{subject} order by rand() desc limit #{pageno}") list<integer> findbysubject(string subject,integer pageno); }
//判断题 @mapper public interface judgequestionmapper { @select("select * from judge_question where questionid in (select questionid from paper_manage where questiontype = 3 and paperid = #{paperid})") list<judgequestion> findbyidandtype(integer paperid); @select("select * from judge_question") ipage<judgequestion> findall(page page); /** * 查询最后一条记录的questionid * @return judgequestion */ @select("select questionid from judge_question order by questionid desc limit 1") judgequestion findonlyquestionid(); @insert("insert into judge_question(subject,question,answer,analysis,level,section) values " + "(#{subject},#{question},#{answer},#{analysis},#{level},#{section})") int add(judgequestion judgequestion); @select("select questionid from judge_question where subject=#{subject} order by rand() desc limit #{pageno}") list<integer> findbysubject(string subject,integer pageno); }
写好mapper底层查询后,需要创建service及其实现类来调用mapper底层。例如:
public interface judgequestionservice { list<judgequestion> findbyidandtype(integer paperid); ipage<judgequestion> findall(page<judgequestion> page); judgequestion findonlyquestionid(); int add(judgequestion judgequestion); list<integer> findbysubject(string subject,integer pageno); }
@service public class judgequestionserviceimpl implements judgequestionservice { @autowired private judgequestionmapper judgequestionmapper; @override public list<judgequestion> findbyidandtype(integer paperid) { return judgequestionmapper.findbyidandtype(paperid); } @override public ipage<judgequestion> findall(page<judgequestion> page) { return judgequestionmapper.findall(page); } @override public judgequestion findonlyquestionid() { return judgequestionmapper.findonlyquestionid(); } @override public int add(judgequestion judgequestion) { return judgequestionmapper.add(judgequestion); } @override public list<integer> findbysubject(string subject, integer pageno) { return judgequestionmapper.findbysubject(subject,pageno); } }
最后将输出文件方法写在controller层:
@requestmapping("/exam/exportword") public void exportword(int examcode, httpservletresponse response) throws filenotfoundexception{ //由于题目应于考试信息对应 所以需要先查出考试信息后根据pageid来查找对应的组卷信息 exammanage res = exammanageservice.findbyid(examcode); int paperid = res.getpaperid(); list<multiquestion> multiquestionres = multiquestionservice.findbyidandtype(paperid); //选择题题库 1 list<fillquestion> fillquestionsres = fillquestionservice.findbyidandtype(paperid); //填空题题库 2 list<judgequestion> judgequestionres = judgequestionservice.findbyidandtype(paperid); //响应到客户端 xwpfdocument document= new xwpfdocument(); //分页 xwpfparagraph firstparagraph = document.createparagraph(); //格式化段落 firstparagraph.getstyleid(); xwpfrun run = firstparagraph.createrun(); int i = 1; run.settext("一、选择题" + "\r\n"); //换行 for (multiquestion multiquestion : multiquestionres) { string str = multiquestion.getquestion(); string str1 = multiquestion.getanswera(); string str2 = multiquestion.getanswerb(); string str3 = multiquestion.getanswerc(); string str4 = multiquestion.getanswerd(); run.settext(i + ". " + str + "\r\n"); run.settext("a. " + str1 + "\r\n"); run.settext("b. " + str2 + "\r\n"); run.settext("c. " + str3 + "\r\n"); run.settext("d. " + str4 + "\r\n"); i++; } run.settext("二、填空题" + "\r\n"); for (fillquestion fillquestion : fillquestionsres) { string str = fillquestion.getquestion(); run.settext(i + ". " + str + "\r\n"); i++; } run.settext("三、判断题" + "\r\n"); for (judgequestion judgequestion : judgequestionres) { string str = judgequestion.getquestion(); run.settext(i + ". " + str + "\r\n"); i++; } document.createtoc(); try { //设置相应头 this.setresponseheader(response, res.getsource() + "试卷.doc"); //输出流 outputstream os = response.getoutputstream(); document.write(os); os.flush(); os.close(); } catch (exception e) { e.printstacktrace(); } } /** * 发送响应流方法 */ private void setresponseheader(httpservletresponse response, string filename) { try { try { filename = urlencoder.encode(filename, "utf-8"); } catch (unsupportedencodingexception e) { e.printstacktrace(); } response.setcontenttype("application/octet-stream;charset=utf-8"); response.setheader("content-disposition", "attachment;filename="+ filename); //遵守缓存规定 response.addheader("pargam", "no-cache"); response.addheader("cache-control", "no-cache"); } catch (exception ex) { ex.printstacktrace(); } }
效果:
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