springboot集成easypoi导出word换行处理过程_Java

项目场景

springboot集成easypoi导出word

<dependency>
	<groupid>cn.afterturn</groupid>
	<artifactid>easypoi-spring-boot-starter</artifactid>
	<version>4.4.0</version>
</dependency>

问题描述

spring boot集成easypoi导出word时，内容包含换行符\n，导出word时换行符失效，会将换行符\n识别为空格。

解决方案

第一种：生成段落的方式

示例代码：

import com.xinghuo.common.base.actionresult;
import io.swagger.annotations.api;
import io.swagger.annotations.apioperation;
import lombok.cleanup;
import org.apache.poi.xwpf.usermodel.xwpfdocument;
import org.apache.poi.xwpf.usermodel.xwpfparagraph;
import org.springframework.web.bind.annotation.getmapping;
import org.springframework.web.bind.annotation.requestmapping;
import org.springframework.web.bind.annotation.restcontroller;

import java.io.file;
import java.io.fileoutputstream;

@restcontroller
@api(tags = "测试")
@requestmapping("/test")
public class testcontroller {

    @apioperation("导出word")
    @getmapping("/export")
    public actionresult export() {
        exportword();
        return actionresult.success();
    }

    /**
     * 导出word，支持换行
     */
    public void exportword(){
        try{
            string content = "第一行\n第二行中文\n"+"第三行";

            @cleanup xwpfdocument doc = new xwpfdocument();

            if(content != null && content.contains("\n")) {
                //设置换行
                string[] text = content.split("\n");
                for (int i = 0; i < text.length; i++) {
                    xwpfparagraph p = doc.createparagraph();
                    p.createrun().settext(text[i]);
                }
            }else{
                xwpfparagraph p = doc.createparagraph();
                p.createrun().settext(content);
            }

            string name = "测试换行内容.docx";
            string filepath = "f:"+ file.separator + name;
            @cleanup fileoutputstream output = new fileoutputstream(filepath);
            doc.write(output);
        } catch (exception e) {
            e.printstacktrace();
        }
    }
}

导出的word内容

第二种：替换模板的情况，换行符替换成回车

示例代码：

import cn.afterturn.easypoi.word.wordexportutil;
import com.xinghuo.common.base.actionresult;
import com.xinghuo.common.util.xssescape;
import io.swagger.annotations.api;
import io.swagger.annotations.apioperation;
import lombok.cleanup;
import org.apache.poi.xwpf.usermodel.xwpfdocument;
import org.apache.poi.xwpf.usermodel.xwpfparagraph;
import org.apache.poi.xwpf.usermodel.xwpfrun;
import org.springframework.web.bind.annotation.getmapping;
import org.springframework.web.bind.annotation.requestmapping;
import org.springframework.web.bind.annotation.restcontroller;

import java.io.file;
import java.io.fileoutputstream;
import java.util.hashmap;
import java.util.list;
import java.util.map;

@restcontroller
@api(tags = "测试")
@requestmapping("/test")
public class test1controller {

    @apioperation("导出word")
    @getmapping("/export")
    public actionresult export() {
        exportwordtemplate();
        return actionresult.success();
    }

    /**
     * 导出word替换模板，支持换行
     */
    public void exportwordtemplate(){
        try{
            string content = "第一行\n第二行中文\n"+"第三行";
            map<string, object> map = new hashmap<>();
            map.put("content",content);

            @cleanup xwpfdocument doc = wordexportutil.exportword07("f:/export_template.docx", map);
            //文本换行
            addbreakincell(doc.getparagraphs());

            string name = "测试换行内容-替换模板.docx";
            string filepath = "f:"+ file.separator + name;
            @cleanup fileoutputstream output = new fileoutputstream(xssescape.escapepath(filepath));
            doc.write(output);
        } catch (exception e) {
            e.printstacktrace();
        }
    }

    /**
     * 文本换行
     */
    public static void addbreakincell(list<xwpfparagraph> paragraphs) {
        for (xwpfparagraph p : paragraphs) {
            for (xwpfrun run : p.getruns()) {//xwpfrun对象定义具有一组公共属性的文本区域
                if(run.gettext(0)!= null && run.gettext(0).contains("\n")) {
                    string[] lines = run.gettext(0).split("\n");
                    if(lines.length > 0) {
                        run.settext(lines[0], 0); // set first line into xwpfrun
                        for(int i=1;i<lines.length;i++){
                            // add break and insert new text
                            run.addbreak();//中断
//                              run.addcarriagereturn();//回车符，但是不起作用
                            run.settext(lines[i]);
                        }
                    }
                }
            }
        }
    }
}

其中export_template.docx文件是word模板，内容为：