用 Solon ReActAgent 构建可审计的发票识别与智能报销流程

你是企业报销审核助手。你的任务是处理一张已完成 OCR 的发票。

必须遵守：
1. 不得自行补造发票号码、金额、日期或购买方名称。
2. 必须调用 checkDuplicate 检查历史报销记录。
3. 只有 verifyInvoice 返回 VERIFIED，才能标记为“已核验”。
4. 购买方名称与公司主体不一致时，转人工复核。
5. 任一关键字段缺失、工具超时或结果冲突时，返回 MANUAL_REVIEW。
6. 输出必须包含 decision、reason、evidence 和 toolTraceId。

可用工具：
- verifyInvoice：核验发票状态
- checkDuplicate：检查重复报销
- matchCompanyTitle：核对购买方抬头
- saveDraft：保存报销单草稿

import java.math.BigDecimal;
import java.time.LocalDate;
import java.util.Map;
import java.util.Set;

public class InvoiceReviewDemo {
    record Invoice(
        String code,
        String number,
        LocalDate issueDate,
        BigDecimal total,
        String buyerName
    ) {}

    record ToolResult(String status, String evidenceId, String message) {}
    record ReviewResult(String decision, String reason, Map<String, String> evidence) {}

    interface InvoiceTools {
        ToolResult verifyInvoice(Invoice invoice);
        ToolResult checkDuplicate(Invoice invoice);
        ToolResult matchCompanyTitle(String buyerName);
    }

    static final class DemoTools implements InvoiceTools {
        private final Set<String> reimbursedKeys = Set.of("044001900111:87654321");

        @Override
        public ToolResult verifyInvoice(Invoice invoice) {
            // 生产环境应替换为企业获准使用的权威核验服务。
            return new ToolResult("VERIFIED", "verify-demo-001", "演示核验通过");
        }

        @Override
        public ToolResult checkDuplicate(Invoice invoice) {
            String key = invoice.code() + ":" + invoice.number();
            boolean duplicated = reimbursedKeys.contains(key);
            return new ToolResult(
                duplicated ? "DUPLICATE" : "NOT_FOUND",
                "duplicate-demo-001",
                duplicated ? "历史报销记录中已存在" : "未发现历史记录"
            );
        }

        @Override
        public ToolResult matchCompanyTitle(String buyerName) {
            boolean matched = "示例科技有限公司".equals(buyerName);
            return new ToolResult(
                matched ? "MATCHED" : "MISMATCH",
                "title-demo-001",
                matched ? "抬头一致" : "购买方名称与公司主体不一致"
            );
        }
    }

    static ReviewResult review(Invoice invoice, InvoiceTools tools) {
        ToolResult duplicate = tools.checkDuplicate(invoice);
        ToolResult title = tools.matchCompanyTitle(invoice.buyerName());
        ToolResult verification = tools.verifyInvoice(invoice);

        Map<String, String> evidence = Map.of(
            "duplicate", duplicate.evidenceId(),
            "title", title.evidenceId(),
            "verification", verification.evidenceId()
        );

        if ("DUPLICATE".equals(duplicate.status())) {
            return new ReviewResult("REJECT", "疑似重复报销", evidence);
        }
        if (!"MATCHED".equals(title.status())) {
            return new ReviewResult("MANUAL_REVIEW", "发票抬头不一致", evidence);
        }
        if (!"VERIFIED".equals(verification.status())) {
            return new ReviewResult("MANUAL_REVIEW", "发票未完成权威核验", evidence);
        }
        return new ReviewResult("APPROVE", "规则检查通过", evidence);
    }

    public static void main(String[] args) {
        Invoice invoice = new Invoice(
            "044001900111",
            "12345678",
            LocalDate.of(2025, 3, 10),
            new BigDecimal("368.00"),
            "示例科技有限公司"
        );
        System.out.println(review(invoice, new DemoTools()));
    }
}

javac InvoiceReviewDemo.java
java InvoiceReviewDemo

CREATE TABLE reimbursement_invoice (
    id                 BIGINT PRIMARY KEY,
    invoice_code       VARCHAR(32) NOT NULL,
    invoice_number     VARCHAR(32) NOT NULL,
    issue_date         DATE NOT NULL,
    total_amount       DECIMAL(18, 2) NOT NULL,
    seller_tax_id      VARCHAR(32),
    verification_id    VARCHAR(128),
    review_status      VARCHAR(32) NOT NULL,
    tool_trace_id      VARCHAR(128) NOT NULL,
    created_at         TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
    UNIQUE (invoice_code, invoice_number)
);