我要评论发票样式
发票内容解析
引用maven
使用pdfbox
<dependency>
<groupid>org.apache.pdfbox</groupid>
<artifactid>pdfbox</artifactid>
<version>2.0.24</version> <!-- 请检查最新版本 -->
</dependency>
获取pdf内容
设置 sortbyposition 为 true 可以按文本位置提取内容，否则获取到的内容错乱，无法获取到真正需要的内容
@requestmapping("uploadreceiptstest")
@responsebody
public map<string,string> uploadreceiptstest() throws exception{
string filepath = "d:/apache-tomcat-8.5.98/webapps/tspspic/发票文件/24372000000145100092.pdf"; // 保存路径
pddocument document = pddocument.load(new file(filepath));
pdftextstripper pdfstripper = new pdftextstripper();
// 排序文本行按其位置
pdfstripper.setsortbyposition(true);
string text = pdfstripper.gettext(document);
document.close();
map<string, string> map = pdfstr(text);
return map;
}
文本内容(部分内容以*替代)
public static void main(string[] args) {
string invoiceinfo = "电子发票（普通发票） 发票号码：******\n" +
"开票日期：******\n" +
"购 名称：****** 销 名称：******\n" +
"买 售\n" +
"方 方\n" +
"信 统一社会信用代码/纳税人识别号：****** 信 统一社会信用代码/纳税人识别号：******\n" +
"息 息\n" +
"项目名称 规格型号 单 位 数 量 单 价 金 额 税率/征收率 税 额\n" +
"******* 100ml：5g 袋 800 4.070796 3256.64 13% 423.36\n" +
"******\n" +
"合 计 ¥3256.64 ¥423.36\n" +
"价税合计（大写） 叁仟陆佰捌拾圆整 （小写）¥3680.00\n" +
"批号：******/ 生产日期：2024-05-15/ 有效期至:2026-04-30/ 含税单价：4.6000/ 生产厂家:******/ 批准文号:******/\n" +
"备 注\n" +
"开票人：王宁\n" +
"王宁";
解析文件内容，返回数据
初版测试
public map<string,string> pdfstr(string invoiceinfo) {
//因解析出的括号不确定为中文还是英文，统一替换为英文字符
invoiceinfo = invoiceinfo.replaceall("（","(").replaceall("）",")");
// 定义正则表达式模式
pattern patterninvoicenumber = pattern.compile("发票号码：(\\d+)");
pattern patterninvoicedate = pattern.compile("开票日期：(\\d{4}年\\d{1,2}月\\d{1,2}日)");
pattern patternbuyername = pattern.compile("购 名称：(.+?) 销 名称：(.+?)\n");
//由上图可以发现“项目名称 规格型号 单 位 数 量 单 价 金 额 税率/征收率 税 额”所需要的内容在下一行数据，使用笨方法直接获取“税额与合计”之间的数据通过之后的空格分割进行获取数据
pattern patternitemdetails = pattern.compile("税 额\\s+(.*?)合 计", pattern.dotall);
pattern patterntotal = pattern.compile("\\(小写\\)¥(\\d+(\\.\\d+)?)");
pattern patternbatchnumber = pattern.compile("批号：(.+?)/");
pattern patternproductiondate = pattern.compile("生产日期：(\\d{4}-\\d{1,2}-\\d{1,2})/");
pattern patternexpirationdate = pattern.compile("有效期至:(\\d{4}-\\d{1,2}-\\d{1,2})/");
pattern patterntaxincludedprice = pattern.compile("含税单价：(\\d+(\\.\\d+)?)");
pattern patternmanufacturer = pattern.compile("生产厂家:(.+?)/");
pattern patternapprovalnumber = pattern.compile("批准文号:(.+?)/");
pattern patternissuer = pattern.compile("开票人：(.+)");
// 创建matcher对象
matcher matcherinvoicenumber = patterninvoicenumber.matcher(invoiceinfo);
matcher matcherinvoicedate = patterninvoicedate.matcher(invoiceinfo);
matcher matcherbuyername = patternbuyername.matcher(invoiceinfo);
matcher matcheritemdetails = patternitemdetails.matcher(invoiceinfo);
matcher matchertotal = patterntotal.matcher(invoiceinfo);
matcher matcherbatchnumber = patternbatchnumber.matcher(invoiceinfo);
matcher matcherproductiondate = patternproductiondate.matcher(invoiceinfo);
matcher matcherexpirationdate = patternexpirationdate.matcher(invoiceinfo);
matcher matchertaxincludedprice = patterntaxincludedprice.matcher(invoiceinfo);
matcher matchermanufacturer = patternmanufacturer.matcher(invoiceinfo);
matcher matcherapprovalnumber = patternapprovalnumber.matcher(invoiceinfo);
matcher matcherissuer = patternissuer.matcher(invoiceinfo);
// 提取数据
string invoicenumber = "";
string invoicedate = "";
string buyername = "";
string sellername = "";
string productname = "";
string specification = "";
string unit = "";
int quantity = 0;
double unitprice = 0.0;
double amount = 0.0;
string taxrate = "";
double taxamount = 0.0;
double total = 0.0;
string batchnumber = "";
string productiondate = "";
string expirationdate = "";
double taxincludedprice = 0.0;
string manufacturer = "";
string approvalnumber = "";
string issuer = "";
if (matcherinvoicenumber.find()) {
invoicenumber = matcherinvoicenumber.group(1);
}
if (matcherinvoicedate.find()) {
invoicedate = matcherinvoicedate.group(1);
}
if (matcherbuyername.find()) {
buyername = matcherbuyername.group(1);
sellername = matcherbuyername.group(2);
}
// 处理项目名称、规格型号、单位、数量、单价、金额、税率/征收率、税额
if (matcheritemdetails.find()) {
string itemdetailsline = matcheritemdetails.group(1).trim();
itemdetailsline = itemdetailsline.replace("\n"," ");
string[] details = itemdetailsline.split(" "); // 按空格分割
if (details.length >= 8) { // 确保有足够的字段
//因部分名称过长，换行数据解析到最后进行拼接
productname = details[0].trim(); // 项目名称
if (details.length >= 9){
productname = details[0].trim()+details[8].trim(); // 项目名称
}
specification = details[1].trim(); // 规格型号
unit = details[2].trim(); // 单位
quantity = integer.parseint(details[3].trim()); // 数量
unitprice = double.parsedouble(details[4].trim()); // 单价
amount = double.parsedouble(details[5].trim()); // 金额
taxrate = details[6].trim(); // 税率/征收率
taxamount = double.parsedouble(details[7].trim()); // 税额
system.out.println("项目名称: " + productname);
system.out.println("规格型号: " + specification);
system.out.println("单位: " + unit);
system.out.println("数量: " + quantity);
system.out.println("单价: " + unitprice);
system.out.println("金额: " + amount);
system.out.println("税率/征收率: " + taxrate);
system.out.println("税额: " + taxamount);
}
}
if (matchertotal.find()) {
total = double.parsedouble(matchertotal.group(1));
}
if (matcherbatchnumber.find()) {
batchnumber = matcherbatchnumber.group(1);
}
if (matcherproductiondate.find()) {
productiondate = matcherproductiondate.group(1);
}
if (matcherexpirationdate.find()) {
expirationdate = matcherexpirationdate.group(1);
}
if (matchertaxincludedprice.find()) {
taxincludedprice = double.parsedouble(matchertaxincludedprice.group(1));
}
if (matchermanufacturer.find()) {
manufacturer = matchermanufacturer.group(1);
}
if (matcherapprovalnumber.find()) {
approvalnumber = matcherapprovalnumber.group(1);
}
if (matcherissuer.find()) {
issuer = matcherissuer.group(1);
}
// 输出其他结果
system.out.println("发票号码: " + invoicenumber);
system.out.println("开票日期: " + invoicedate);
system.out.println("购买方名称: " + buyername);
system.out.println("销售方名称: " + sellername);
system.out.println("价税合计: " + total);
system.out.println("批号: " + batchnumber);
system.out.println("生产日期: " + productiondate);
system.out.println("有效期至: " + expirationdate);
system.out.println("含税单价: " + taxincludedprice);
system.out.println("生产厂家: " + manufacturer);
system.out.println("批准文号: " + approvalnumber);
system.out.println("开票人: " + issuer);
}
优化代码
map存储正则表达式：将所有正则表达式模式和对应的字段名称存储在一个map中，遍历map并执行匹配，从而避免了为每个字段都写单独的匹配代码。
抽取通用逻辑：将匹配逻辑抽象成一个通用方法，简化了代码结构，减少了重复代码。
处理商品详情：在匹配完itemdetails后，再拆分字符串并填充对应的字段。
public static map<string, string> pdfstr(string invoiceinfo) {
invoiceinfo = invoiceinfo.replaceall("（", "(").replaceall("）", ")");
// 定义正则表达式模式
map<string, string> patterns = new hashmap<>();
patterns.put("invoicenumber", "发票号码：(\\d+)");
patterns.put("invoicedate", "开票日期：(\\d{4}年\\d{1,2}月\\d{1,2}日)");
patterns.put("buyername", "购 名称：(.+?) 销 名称：(.+?)\n");
patterns.put("itemdetails", "税 额\\s+(.*?)合 计");
patterns.put("total", "\\(小写\\)¥(\\d+(\\.\\d+)?)");
patterns.put("batchnumber", "批号：(.+?)/");
patterns.put("productiondate", "生产日期：(\\d{4}-\\d{1,2}-\\d{1,2})/");
patterns.put("expirationdate", "有效期至:(\\d{4}-\\d{1,2}-\\d{1,2})/");
patterns.put("taxincludedprice", "含税单价：(\\d+(\\.\\d+)?)");
patterns.put("manufacturer", "生产厂家:(.+?)/");
patterns.put("approvalnumber", "批准文号:(.+?)/");
patterns.put("issuer", "开票人：(.+)");
// 提取数据
map<string, string> result = new hashmap<>();
for (map.entry<string, string> entry : patterns.entryset()) {
pattern pattern = pattern.compile(entry.getvalue(), pattern.dotall);
matcher matcher = pattern.matcher(invoiceinfo);
if (matcher.find()) {
result.put(entry.getkey(), matcher.group(1).trim());
}
}
// 处理项目名称、规格型号、单位、数量、单价、金额、税率/征收率、税额
if (result.containskey("itemdetails")) {
string[] details = result.get("itemdetails").replace("\n", " ").split(" ");
if (details.length >= 8) {
result.put("productname", details[0].trim() + (details.length > 8 ? details[8].trim() : ""));
result.put("specification", details[1].trim());
result.put("unit", details[2].trim());
result.put("quantity", details[3].trim());
result.put("unitprice", details[4].trim());
result.put("amount", details[5].trim());
result.put("taxrate", details[6].trim());
result.put("taxamount", details[7].trim());
}
}
// 打印结果
for (map.entry<string, string> entry : result.entryset()) {
system.out.println(entry.getkey() + ": " + entry.getvalue());
}
return result;
}
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