调用方法生成PDF时，使用的ftl模版，以及字体都是从jar中读取的，无需担心多节点部署引用jar
文件存放路径org.freemarker freemarker-gae2.3.23 commons-io commons-io2.6 com.alibaba fastjson1.2.76
// 字体文件 resources/fonts // 模版文件 resources/templates代码
import com.lowagie.text.pdf.baseFont;
import freemarker.cache.StringTemplateLoader;
import freemarker.template.Configuration;
import freemarker.template.Template;
import org.apache.commons.io.FileUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import org.xhtmlrenderer.pdf.ITextRenderer;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.StringWriter;
import java.util.Map;
@Component
public class PdfHelper {
private String classpath = getClass().getResource("/").getPath();
private String templatePath = "/templates";
private String templateFileName = "pdf.ftl";
private String imagePath = "/images/";
private String fontPath = "fonts/";
private String font = "simsun.ttc";
private String encoding = "UTF-8";
@Value("{$file.path}")
private String filePath;
public void createPDF(Map data, OutputStream out, String templateName) throws Exception {
// 创建一个FreeMarker实例, 负责管理FreeMarker模板的Configuration实例
Configuration cfg = new Configuration(Configuration.DEFAULT_INCOMPATIBLE_IMPROVEMENTS);
// 指定FreeMarker模板文件的位置
ITextRenderer renderer = new ITextRenderer();
String simsun = System.getProperty("user.dir") + "/simsun.ttc";
String arialuni = System.getProperty("user.dir") + "/arialuni.ttf";
File fondFile = new File(simsun);
if (!fondFile.exists()) {
getFondPath();
}
// 设置 css中 的字体样式（暂时仅支持宋体和黑体）
renderer.getFontResolver().addFont(simsun, baseFont.IDENTITY_H, baseFont.NOT_EMBEDDED);
renderer.getFontResolver().addFont(arialuni, baseFont.IDENTITY_H, baseFont.NOT_EMBEDDED);
StringTemplateLoader stringLoader = new StringTemplateLoader();
String templateString = getFileData("templates/" + templateName);
stringLoader.putTemplate("myTemplate", templateString);
cfg.setTemplateLoader(stringLoader);
Template tpl = cfg.getTemplate("myTemplate", "utf-8");
StringWriter writer = new StringWriter();
// 把null转换成""
Map dataMap = CommunalTool.objectToMap(data);
// 将数据输出到html中
tpl.process(data, writer);
writer.flush();
String html = writer.toString();
// 把html代码传入渲染器中
renderer.setdocumentFromString(html);
renderer.layout();
renderer.createPDF(out, false);
renderer.finishPDF();
out.flush();
out.close();
}
// 读取jar中的ftl模版文件
private String getFileData(String path) {
InputStream stream = getClass().getClassLoader().getResourceAsStream(path);
// log.info("infile:"+infile);
StringBuffer sb = new StringBuffer();
BufferedReader br = null;
try {
br = new BufferedReader(new InputStreamReader(stream, "UTF-8"));
String s = null;
while ((s = br.readLine()) != null) {
sb.append(s);
}
br.close();
return sb.toString();
} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
if (br != null) {
try {
br.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
private String getFondPath() throws IOException {
String fontPath = System.getProperty("user.dir");
InputStream inputStream = getClass().getClassLoader().getResourceAsStream("fonts/simsun.ttc");
//在根目录生成一个文件
File targetFile = new File(fontPath + "/simsun.ttc");
// //将流转成File格式
FileUtils.copyInputStreamToFile(inputStream, targetFile);
InputStream arialuniStream = getClass().getClassLoader().getResourceAsStream("fonts/arialuni.ttf");
File arialuni = new File(fontPath + "/arialuni.ttf");
FileUtils.copyInputStreamToFile(arialuniStream, arialuni);
return fontPath;
}
public void setClasspath(String classpath) {
this.classpath = classpath;
}
public void setTemplatePath(String templatePath) {
this.templatePath = templatePath;
}
public void setTemplateFileName(String templateFileName) {
this.templateFileName = templateFileName;
}
public void setImagePath(String imagePath) {
this.imagePath = imagePath;
}
public void setFontPath(String fontPath) {
this.fontPath = fontPath;
}
public void setFont(String font) {
this.font = font;
}
public void setEncoding(String encoding) {
this.encoding = encoding;
}
}
工具类
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.serializer.ValueFilter;
import org.apache.commons.lang3.StringUtils;
import sun.misc.base64Encoder;
import java.io.File;
import java.io.FileInputStream;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import java.util.Map;
public class CommunalTool {
public static Object objectToData(Object obj, Class beanClass) throws Exception {
return JSONObject.parseObject(objectToString(obj), beanClass);
}
public static Map objectToMap(Map map) throws Exception {
return JSONObject.parseObject(objectToString(map), Map.class);
}
public static List objectToList(List list) throws Exception {
return JSONObject.parseObject(objectToString(list), List.class);
}
// fistJson 的一个过滤器
static SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");
static DateFormat format = new SimpleDateFormat("yyyy-MM-dd");
private static ValueFilter filter = new ValueFilter() {
@Override
public Object process(Object obj, String s, Object v) {
if (v instanceof Date) {
return simpleDateFormat.format(v);
} else {
if (v == null) {
return "";
} else {
return v;
}
}
}
};
public static String objectToString(Object obj) {
// JSON.DEFFAULT_DATE_FORMAT = "yyyy-MM-dd";
return JSON.toJSONString(obj, filter, SerializerFeature.WriteNonStringKeyAsString, SerializerFeature.WriteNullStringAsEmpty);
}
public static String encodebase64Picture(String path) throws Exception {
File file = new File(path);
FileInputStream inputFile = new FileInputStream(file);
byte[] buffer = new byte[(int) file.length()];
inputFile.read(buffer);
inputFile.close();
String result = new base64Encoder().encode(buffer);
if (StringUtils.isNotBlank(result)) {
result = "data:image/png;base64," + result;
} else {
result = null;
}
return result;
}
public static String getTransformationDate(Date date) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
return sdf.format(date);
}
public static String getTimeDate(Date date) {
int minte = getMinute(date);
minte = minte % 5;
SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
Date afterDate = new Date(date.getTime() + 300000);
System.out.println(sdf.format(afterDate));
return "1";
}
public static int getMinute(Date date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
return calendar.get(Calendar.MINUTE);
}
public static String FORMAT_FULL = "yyyy-MM-dd HH:mm:ss";
public static String getTime(Date date) {
SimpleDateFormat df = new SimpleDateFormat(FORMAT_FULL);
return df.format(date).substring(12, 16);
}
}
ftl模版
电子化模版单个表格
模版 ${name} 巡视类型：例行巡视欢迎分享，转载请注明来源：内存溢出
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