API代理系统概览
构建强大的后端集成能力,实现数据同步和业务流程自动化
此示例演示如何使用kinlink proxy API与外部系统集成,实现数据的双向同步、实时处理和业务自动化。通过代理服务,可以安全地与企业内部系统、第三方API和云服务进行通信。
API代理核心功能
- 🔗 外部集成:与第三方API和内部系统无缝对接
- 🔐 安全通信:加密传输和身份验证机制
- 🔄 数据同步:实时或批量数据同步处理
- ⚡ 高性能:异步处理和请求优化
- 📊 监控日志:完整的请求追踪和错误处理
- 🛡️ 错误恢复:自动重试和故障转移机制
关键功能
- HTTP请求代理和转发
- 数据格式转换和映射
- 认证和权限管理
- 错误处理和重试机制
代码示例
/**
* 示例14: Kinlink代理集成
* 功能:使用代理API与外部系统集成,实现数据同步和业务自动化
*/
(function () {
// 代理配置
const PROXY_CONFIG = {
baseUrl: 'https://api.example.com',
endpoints: {
users: '/api/users',
orders: '/api/orders',
notifications: '/api/notifications',
validation: '/api/validate'
},
timeout: 10000,
retryCount: 3,
retryDelay: 1000
};
// 认证配置
const AUTH_CONFIG = {
type: 'bearer', // 或 'basic', 'api-key'
token: null,
refreshUrl: '/api/auth/refresh'
};
// 请求队列和状态管理
let requestQueue = [];
let isProcessingQueue = false;
let authToken = null;
kinlink.events.on(kinlink.FormEvents.FORM_LOADED, () => {
try {
console.log('初始化Kinlink代理系统...');
// 创建代理管理面板
createProxyDashboard();
// 初始化认证
initializeAuth();
// 设置表单事件监听
setupFormEventListeners();
// 启动定时任务
startPeriodicTasks();
console.log('Kinlink代理系统初始化完成');
} catch (error) {
console.error('代理系统初始化失败:', error);
}
});
// 创建代理管理面板
function createProxyDashboard() {
const dashboardHTML = `
<div id="proxyDashboard" style="
background: linear-gradient(135deg, #8e44ad 0%, #3498db 100%);
padding: 25px;
margin: 20px 0;
border-radius: 15px;
color: white;
box-shadow: 0 6px 25px rgba(142, 68, 173, 0.3);
">
<div style="text-align: center; margin-bottom: 25px;">
<h2 style="margin: 0 0 10px 0; font-size: 26px; font-weight: 700;">
🔗 Kinlink代理系统
</h2>
<div style="font-size: 15px; opacity: 0.95;">
实时监控外部API集成状态和数据同步
</div>
</div>
<div id="proxyStats" style="
display: grid;
grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
gap: 15px;
margin-bottom: 20px;
">
<div style="background: rgba(255,255,255,0.15); padding: 15px; border-radius: 10px; text-align: center;">
<div style="font-size: 24px; font-weight: 600; margin-bottom: 5px;" id="totalRequests">0</div>
<div style="font-size: 13px; opacity: 0.9;">总请求数</div>
</div>
<div style="background: rgba(255,255,255,0.15); padding: 15px; border-radius: 10px; text-align: center;">
<div style="font-size: 24px; font-weight: 600; margin-bottom: 5px;" id="successRate">100%</div>
<div style="font-size: 13px; opacity: 0.9;">成功率</div>
</div>
<div style="background: rgba(255,255,255,0.15); padding: 15px; border-radius: 10px; text-align: center;">
<div style="font-size: 24px; font-weight: 600; margin-bottom: 5px;" id="queueLength">0</div>
<div style="font-size: 13px; opacity: 0.9;">队列长度</div>
</div>
<div style="background: rgba(255,255,255,0.15); padding: 15px; border-radius: 10px; text-align: center;">
<div style="font-size: 24px; font-weight: 600; margin-bottom: 5px;" id="connectionStatus">连接中</div>
<div style="font-size: 13px; opacity: 0.9;">连接状态</div>
</div>
</div>
<div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 20px;">
<button id="testConnection" style="padding: 12px; background: rgba(255,255,255,0.2); color: white; border: 2px solid rgba(255,255,255,0.3); border-radius: 8px; cursor: pointer; transition: all 0.3s ease; font-weight: 500;">
🔍 测试连接
</button>
<button id="syncData" style="padding: 12px; background: rgba(255,255,255,0.2); color: white; border: 2px solid rgba(255,255,255,0.3); border-radius: 8px; cursor: pointer; transition: all 0.3s ease; font-weight: 500;">
🔄 同步数据
</button>
<button id="clearQueue" style="padding: 12px; background: rgba(255,255,255,0.2); color: white; border: 2px solid rgba(255,255,255,0.3); border-radius: 8px; cursor: pointer; transition: all 0.3s ease; font-weight: 500;">
🗑️ 清空队列
</button>
<button id="showLogs" style="padding: 12px; background: rgba(255,255,255,0.2); color: white; border: 2px solid rgba(255,255,255,0.3); border-radius: 8px; cursor: pointer; transition: all 0.3s ease; font-weight: 500;">
📋 查看日志
</button>
</div>
<div id="requestLog" style="
background: rgba(0,0,0,0.2);
padding: 15px;
border-radius: 8px;
max-height: 200px;
overflow-y: auto;
font-size: 12px;
font-family: monospace;
line-height: 1.4;
">
<div>系统就绪,等待API请求...</div>
</div>
</div>
`;
// 插入面板到表单顶部
const formElement = document.querySelector('.ant-form') || document.body;
const dashboardElement = document.createElement('div');
dashboardElement.innerHTML = dashboardHTML;
formElement.insertBefore(dashboardElement, formElement.firstChild);
// 绑定面板事件
bindDashboardEvents();
}
// 绑定面板事件
function bindDashboardEvents() {
const dashboard = document.getElementById('proxyDashboard');
if (!dashboard) return;
dashboard.addEventListener('click', async (e) => {
const target = e.target;
if (target.id === 'testConnection') {
await testApiConnection();
} else if (target.id === 'syncData') {
await performDataSync();
} else if (target.id === 'clearQueue') {
clearRequestQueue();
} else if (target.id === 'showLogs') {
showDetailedLogs();
}
});
}
// 初始化认证
async function initializeAuth() {
try {
// 尝试从本地存储获取令牌
const storedToken = localStorage.getItem('kinlink_proxy_token');
if (storedToken) {
authToken = storedToken;
AUTH_CONFIG.token = storedToken;
}
// 验证令牌有效性
if (authToken) {
const isValid = await validateToken(authToken);
if (!isValid) {
await refreshAuthToken();
}
} else {
await requestNewToken();
}
logMessage('认证初始化完成', 'success');
} catch (error) {
logMessage(`认证失败: ${error.message}`, 'error');
}
}
// 验证令牌
async function validateToken(token) {
try {
const response = await makeProxyRequest('/api/auth/validate', {
method: 'POST',
headers: {
'Authorization': `Bearer ${token}`,
'Content-Type': 'application/json'
}
});
return response.status === 200;
} catch (error) {
return false;
}
}
// 刷新认证令牌
async function refreshAuthToken() {
try {
const response = await makeProxyRequest(AUTH_CONFIG.refreshUrl, {
method: 'POST',
headers: {
'Authorization': `Bearer ${authToken}`,
'Content-Type': 'application/json'
}
});
if (response.ok) {
const data = await response.json();
authToken = data.token;
AUTH_CONFIG.token = authToken;
localStorage.setItem('kinlink_proxy_token', authToken);
logMessage('令牌刷新成功', 'success');
} else {
throw new Error('令牌刷新失败');
}
} catch (error) {
logMessage(`令牌刷新失败: ${error.message}`, 'error');
await requestNewToken();
}
}
// 请求新令牌
async function requestNewToken() {
// 这里应该实现获取新令牌的逻辑
// 可能需要重新登录或使用其他认证方式
logMessage('需要重新认证', 'warning');
}
// 设置表单事件监听
function setupFormEventListeners() {
// 监听表单提交前事件
kinlink.events.on(kinlink.FormEvents.BEFORE_SUBMIT, handleBeforeSubmit);
// 监听表单提交后事件
kinlink.events.on(kinlink.FormEvents.AFTER_SUBMIT, handleAfterSubmit);
// 监听字段值变化
kinlink.events.on(kinlink.FormEvents.FIELD_VALUE_CHANGED, handleFieldChange);
}
// 处理提交前事件
async function handleBeforeSubmit(data) {
try {
logMessage('开始表单验证...', 'info');
// 调用外部验证API
const validationResult = await validateFormData(data.values);
if (!validationResult.valid) {
kinlink.formApi.showMessage('error', `验证失败: ${validationResult.message}`, 5);
return false; // 阻止提交
}
logMessage('表单验证通过', 'success');
return true;
} catch (error) {
logMessage(`验证过程出错: ${error.message}`, 'error');
kinlink.formApi.showMessage('error', '验证服务暂时不可用,请稍后重试', 3);
return false;
}
}
// 处理提交后事件
async function handleAfterSubmit(data) {
if (data.success) {
try {
logMessage('开始数据同步...', 'info');
// 同步到外部系统
await syncToExternalSystems(data.submittedData);
// 发送通知
await sendNotifications(data.submittedData);
logMessage('数据同步完成', 'success');
} catch (error) {
logMessage(`同步失败: ${error.message}`, 'error');
}
}
}
// 处理字段变化
async function handleFieldChange(data) {
const { fieldCode, value } = data;
// 对特定字段进行实时验证
if (fieldCode === '文字列__1行__3') { // 邮箱字段
await validateEmailField(value);
}
// 更新外部系统的草稿
queueRequest({
type: 'UPDATE_DRAFT',
fieldCode,
value,
timestamp: new Date().toISOString()
});
}
// 执行代理请求
async function makeProxyRequest(endpoint, options = {}) {
const url = `${PROXY_CONFIG.baseUrl}${endpoint}`;
const requestOptions = {
timeout: PROXY_CONFIG.timeout,
...options,
headers: {
'Content-Type': 'application/json',
'Authorization': authToken ? `Bearer ${authToken}` : undefined,
...options.headers
}
};
try {
// 使用kinlink的代理功能
const response = await kinlink.proxy.request(url, requestOptions);
updateStats('success');
logMessage(`请求成功: ${endpoint}`, 'success');
return response;
} catch (error) {
updateStats('error');
logMessage(`请求失败: ${endpoint} - ${error.message}`, 'error');
// 实现重试逻辑
if (shouldRetry(error)) {
return await retryRequest(endpoint, options);
}
throw error;
}
}
// 重试请求
async function retryRequest(endpoint, options, attempt = 1) {
if (attempt > PROXY_CONFIG.retryCount) {
throw new Error(`请求失败,已达到最大重试次数: ${endpoint}`);
}
logMessage(`重试请求 (${attempt}/${PROXY_CONFIG.retryCount}): ${endpoint}`, 'warning');
// 等待重试延迟
await new Promise(resolve => setTimeout(resolve, PROXY_CONFIG.retryDelay * attempt));
try {
return await makeProxyRequest(endpoint, options);
} catch (error) {
return await retryRequest(endpoint, options, attempt + 1);
}
}
// 判断是否应该重试
function shouldRetry(error) {
const retryableErrors = ['NETWORK_ERROR', 'TIMEOUT', 'SERVER_ERROR'];
return retryableErrors.some(errorType => error.message.includes(errorType));
}
// 验证表单数据
async function validateFormData(formData) {
try {
const response = await makeProxyRequest(PROXY_CONFIG.endpoints.validation, {
method: 'POST',
body: JSON.stringify(formData)
});
if (response.ok) {
const result = await response.json();
return result;
} else {
return { valid: false, message: '验证服务返回错误' };
}
} catch (error) {
return { valid: false, message: error.message };
}
}
// 验证邮箱字段
async function validateEmailField(email) {
if (!email || !email.includes('@')) return;
try {
const response = await makeProxyRequest('/api/validate/email', {
method: 'POST',
body: JSON.stringify({ email })
});
if (response.ok) {
const result = await response.json();
if (!result.valid) {
kinlink.formApi.showMessage('warning', result.message, 3);
}
}
} catch (error) {
console.warn('邮箱验证失败:', error);
}
}
// 同步到外部系统
async function syncToExternalSystems(data) {
const syncTasks = [
syncToUserSystem(data),
syncToOrderSystem(data),
updateAnalytics(data)
];
const results = await Promise.allSettled(syncTasks);
results.forEach((result, index) => {
if (result.status === 'rejected') {
logMessage(`同步任务 ${index + 1} 失败: ${result.reason.message}`, 'error');
}
});
}
// 同步到用户系统
async function syncToUserSystem(data) {
return await makeProxyRequest(PROXY_CONFIG.endpoints.users, {
method: 'POST',
body: JSON.stringify({
action: 'create_or_update',
userData: extractUserData(data)
})
});
}
// 同步到订单系统
async function syncToOrderSystem(data) {
return await makeProxyRequest(PROXY_CONFIG.endpoints.orders, {
method: 'POST',
body: JSON.stringify({
action: 'create',
orderData: extractOrderData(data)
})
});
}
// 更新分析数据
async function updateAnalytics(data) {
return await makeProxyRequest('/api/analytics/events', {
method: 'POST',
body: JSON.stringify({
event: 'form_submission',
timestamp: new Date().toISOString(),
data: data
})
});
}
// 发送通知
async function sendNotifications(data) {
const notifications = [
{
type: 'email',
to: data['文字列__1行__3'], // 邮箱字段
template: 'submission_confirmation',
data: data
},
{
type: 'webhook',
url: 'https://hooks.example.com/form-submission',
data: data
}
];
for (const notification of notifications) {
try {
await makeProxyRequest(PROXY_CONFIG.endpoints.notifications, {
method: 'POST',
body: JSON.stringify(notification)
});
logMessage(`通知发送成功: ${notification.type}`, 'success');
} catch (error) {
logMessage(`通知发送失败: ${notification.type} - ${error.message}`, 'error');
}
}
}
// 提取用户数据
function extractUserData(formData) {
return {
name: formData['文字列__1行__0'],
email: formData['文字列__1行__3'],
phone: formData['文字列__1行__2'],
company: formData['单行文本框_10']
};
}
// 提取订单数据
function extractOrderData(formData) {
return {
customerEmail: formData['文字列__1行__3'],
orderDate: new Date().toISOString(),
items: [], // 根据表单数据解析
total: 0 // 根据表单数据计算
};
}
// 队列管理
function queueRequest(request) {
requestQueue.push({
...request,
id: Date.now(),
status: 'pending'
});
updateQueueDisplay();
if (!isProcessingQueue) {
processQueue();
}
}
// 处理请求队列
async function processQueue() {
if (isProcessingQueue || requestQueue.length === 0) return;
isProcessingQueue = true;
while (requestQueue.length > 0) {
const request = requestQueue.shift();
try {
await processQueuedRequest(request);
logMessage(`队列请求处理成功: ${request.type}`, 'success');
} catch (error) {
logMessage(`队列请求处理失败: ${request.type} - ${error.message}`, 'error');
}
updateQueueDisplay();
}
isProcessingQueue = false;
}
// 处理队列中的请求
async function processQueuedRequest(request) {
switch (request.type) {
case 'UPDATE_DRAFT':
return await updateDraft(request);
case 'SYNC_DATA':
return await syncSingleData(request);
default:
throw new Error(`未知请求类型: ${request.type}`);
}
}
// 更新草稿
async function updateDraft(request) {
return await makeProxyRequest('/api/drafts/update', {
method: 'PUT',
body: JSON.stringify({
fieldCode: request.fieldCode,
value: request.value,
timestamp: request.timestamp
})
});
}
// 测试API连接
async function testApiConnection() {
try {
logMessage('测试API连接...', 'info');
const response = await makeProxyRequest('/api/health', {
method: 'GET'
});
if (response.ok) {
logMessage('API连接正常', 'success');
kinlink.formApi.showMessage('success', 'API连接测试成功', 2);
updateConnectionStatus('connected');
} else {
throw new Error('API返回错误状态');
}
} catch (error) {
logMessage(`API连接失败: ${error.message}`, 'error');
kinlink.formApi.showMessage('error', 'API连接测试失败', 2);
updateConnectionStatus('disconnected');
}
}
// 执行数据同步
async function performDataSync() {
try {
logMessage('开始手动数据同步...', 'info');
const formData = kinlink.formApi.getAllFieldValues();
await syncToExternalSystems(formData);
logMessage('手动数据同步完成', 'success');
kinlink.formApi.showMessage('success', '数据同步成功', 2);
} catch (error) {
logMessage(`数据同步失败: ${error.message}`, 'error');
kinlink.formApi.showMessage('error', '数据同步失败', 2);
}
}
// 清空请求队列
function clearRequestQueue() {
requestQueue = [];
updateQueueDisplay();
logMessage('请求队列已清空', 'info');
kinlink.formApi.showMessage('info', '队列已清空', 2);
}
// 显示详细日志
function showDetailedLogs() {
const logs = document.getElementById('requestLog').innerHTML;
const newWindow = window.open('', '_blank', 'width=800,height=600');
newWindow.document.write(`
<html>
<head><title>API请求日志</title></head>
<body style="font-family: monospace; padding: 20px;">
<h1>API请求详细日志</h1>
<div style="background: #f5f5f5; padding: 15px; border-radius: 5px;">
${logs}
</div>
</body>
</html>
`);
}
// 记录日志消息
function logMessage(message, type = 'info') {
const timestamp = new Date().toLocaleTimeString();
const logElement = document.getElementById('requestLog');
if (logElement) {
const colors = {
info: '#3498db',
success: '#27ae60',
warning: '#f39c12',
error: '#e74c3c'
};
const newLog = document.createElement('div');
newLog.style.color = colors[type] || colors.info;
newLog.innerHTML = `[${timestamp}] ${message}`;
logElement.appendChild(newLog);
// 保持最多50条日志
while (logElement.children.length > 50) {
logElement.removeChild(logElement.firstChild);
}
// 滚动到底部
logElement.scrollTop = logElement.scrollHeight;
}
}
// 更新统计数据
let totalRequests = 0;
let successfulRequests = 0;
function updateStats(type) {
totalRequests++;
if (type === 'success') {
successfulRequests++;
}
const successRate = totalRequests > 0 ? Math.round((successfulRequests / totalRequests) * 100) : 100;
document.getElementById('totalRequests').textContent = totalRequests;
document.getElementById('successRate').textContent = `${successRate}%`;
}
// 更新队列显示
function updateQueueDisplay() {
document.getElementById('queueLength').textContent = requestQueue.length;
}
// 更新连接状态
function updateConnectionStatus(status) {
const statusElement = document.getElementById('connectionStatus');
const statusTexts = {
connected: '已连接',
disconnected: '未连接',
connecting: '连接中'
};
statusElement.textContent = statusTexts[status] || status;
}
// 启动定时任务
function startPeriodicTasks() {
// 每30秒检查连接状态
setInterval(async () => {
await testApiConnection();
}, 30000);
// 每10秒处理队列
setInterval(() => {
if (!isProcessingQueue && requestQueue.length > 0) {
processQueue();
}
}, 10000);
}
})();使用说明
要使用此功能,只需将代码复制到您的kinlink自定义JavaScript中。请根据您的实际API配置修改代理地址、认证信息和端点路径。
完整代码请下载查看:
14-kinlink proxy.js
注意事项
使用代理功能需要确保目标API支持CORS或配置了适当的代理服务器。认证信息应安全存储,避免在前端代码中暴露敏感数据。
API参考
此示例使用了以下kinlink API:
kinlink.events.on(eventName, callback)- 注册事件监听器kinlink.FormEvents.FORM_LOADED- 表单加载完成事件kinlink.FormEvents.BEFORE_SUBMIT- 表单提交前事件kinlink.FormEvents.AFTER_SUBMIT- 表单提交后事件kinlink.FormEvents.FIELD_VALUE_CHANGED- 字段值变化事件kinlink.proxy.request(url, options)- 执行代理HTTP请求kinlink.formApi.getAllFieldValues()- 获取所有字段值kinlink.formApi.showMessage(type, message, duration)- 显示消息提示