JAVA电子合同签章小程序开源代码

以下是一个基于Uniapp和Java的合同生成小程序开源代码片段及实现思路涵盖前后端关键模块内容经过精简整合技术选型前端Uniapp Vue3 uView UI后端Spring Boot MyBatis Plus数据库MySQL合同模板引擎Freemarker前端核心代码// pages/contract/create.vue template u-form :modelformData refformRef u-form-item label合同类型 proptemplateId u-select v-modelformData.templateId :optionstemplates / /u-form-item u-form-item v-for(field,index) in dynamicFields :keyindex :labelfield.label u-input v-modelfield.value :placeholder请输入${field.label} / /u-form-item u-button clickgenerate生成合同/u-button /u-form /template script setup const formData reactive({ templateId: null, parties: [] }); const loadTemplates async () { const res await uni.request({ url: /api/template/list, method: GET }); templates.value res.data.map(item ({ label: item.name, value: item.id })); }; /script后端核心逻辑// ContractController.java RestController RequestMapping(/api/contract) public class ContractController { Autowired private TemplateService templateService; PostMapping(/generate) public Result generate(RequestBody ContractDTO dto) { // 1. 获取模板内容 String templateContent templateService.getById(dto.getTemplateId()).getContent(); // 2. 填充模板变量 Configuration cfg new Configuration(Configuration.VERSION_2_3_31); StringWriter writer new StringWriter(); new Template(contract, new StringReader(templateContent), cfg) .process(dto.getVariables(), writer); // 3. 生成PDF byte[] pdfBytes PdfGenerator.generate(writer.toString()); return Result.success().data(pdf, Base64.getEncoder().encodeToString(pdfBytes)); } }数据库设计CREATE TABLE contract_template ( id int NOT NULL AUTO_INCREMENT, name varchar(100) DEFAULT NULL COMMENT 模板名称, content text COMMENT Freemarker模板内容, variables json DEFAULT NULL COMMENT 变量定义, PRIMARY KEY (id) ); CREATE TABLE contract_record ( id int NOT NULL AUTO_INCREMENT, template_id int DEFAULT NULL, parties json DEFAULT NULL COMMENT 签约方信息, content text COMMENT 最终合同内容, pdf_url varchar(255) DEFAULT NULL, PRIMARY KEY (id) );PDF生成工具类// PdfGenerator.java public class PdfGenerator { private static final Logger log LoggerFactory.getLogger(PdfGenerator.class); public static byte[] generate(String html) throws IOException { try (ByteArrayOutputStream os new ByteArrayOutputStream()) { PdfRendererBuilder builder new PdfRendererBuilder(); builder.withHtmlContent(html, null); builder.toStream(os); builder.run(); return os.toByteArray(); } } }关键功能实现动态表单渲染根据模板配置的variables字段动态生成输入表单watch(() formData.templateId, (newVal) { if (!newVal) return; uni.request({ url: /api/template/detail?id${newVal}, success(res) { dynamicFields.value JSON.parse(res.data.variables).map(item ({ ...item, value: })); } }); });合同签署流程生成合同PDF后调用微信小程序签署API记录签署状态到数据库通过WebSocket实时通知签署进度部署方案前端发布到微信小程序平台后端Docker容器化部署FROM openjdk:17 ARG JAR_FILEtarget/*.jar COPY ${JAR_FILE} app.jar ENTRYPOINT [java,-jar,/app.jar]扩展功能建议区块链存证将合同哈希值上链实现不可篡改public class BlockchainService { public String storeHash(String hash) { // 调用以太坊智能合约 Web3j web3 Web3j.build(new HttpService()); EthSendTransaction transaction web3.ethSendTransaction(...); return transaction.getTransactionHash(); } }OCR身份识别集成百度AI实现身份证识别public class IdCardOCR { public IdCardInfo recognize(byte[] imageData) { AipOcr client new AipOcr(APP_ID, API_KEY, SECRET_KEY); JSONObject res client.idcard(imageData, true); return parseResult(res); } }完整项目需要包含用户认证、权限控制、合同管理等模块建议参考GitHub上成熟的开源项目如uni-adminUniapp后台模板renren-fastSpring Boot快速开发框架document-signature电子签名解决方案陈