项目场景：

spring boot集成easypoi导出word

<dependency>
	<groupId>cn.afterturn</groupId>
	<artifactId>easypoi-spring-boot-starter</artifactId>
	<version>4.4.0</version>
</dependency>

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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。

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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

 

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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：

导出的内容

 

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导出的本地文件截图