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Implement fetch polyfill and Promise for ES5 backend

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Co-authored-by: qaiu <29825328+qaiu@users.noreply.github.com>
This commit is contained in:
copilot-swe-agent[bot]
2025-12-06 22:44:52 +00:00
parent 636994387f
commit 199456cb11
6 changed files with 1005 additions and 1 deletions
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96
parser/src/main/java/cn/qaiu/parser/customjs/JsFetchBridge.java Normal file
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@@ -0,0 +1,96 @@
package cn.qaiu.parser.customjs;
import cn.qaiu.parser.customjs.JsHttpClient.JsHttpResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.HashMap;
import java.util.Map;
/**
* JavaScript Fetch API桥接类
* 将标准的fetch API调用桥接到现有的JsHttpClient实现
*
* @author <a href="https://qaiu.top">QAIU</a>
* Create at 2025/12/06
*/
public class JsFetchBridge {
private static final Logger log = LoggerFactory.getLogger(JsFetchBridge.class);
private final JsHttpClient httpClient;
public JsFetchBridge(JsHttpClient httpClient) {
this.httpClient = httpClient;
}
/**
* Fetch API实现
* 接收fetch API调用并转换为JsHttpClient调用
*
* @param url 请求URL
* @param options 请求选项（包含method、headers、body等）
* @return JsHttpResponse响应对象
*/
public JsHttpResponse fetch(String url, Map<String, Object> options) {
try {
// 解析请求方法
String method = "GET";
if (options != null && options.containsKey("method")) {
method = options.get("method").toString().toUpperCase();
}
// 解析并设置请求头
if (options != null && options.containsKey("headers")) {
Object headersObj = options.get("headers");
if (headersObj instanceof Map) {
@SuppressWarnings("unchecked")
Map<String, Object> headersMap = (Map<String, Object>) headersObj;
for (Map.Entry<String, Object> entry : headersMap.entrySet()) {
if (entry.getValue() != null) {
httpClient.putHeader(entry.getKey(), entry.getValue().toString());
}
}
}
}
// 解析请求体
Object body = null;
if (options != null && options.containsKey("body")) {
body = options.get("body");
}
// 根据方法执行请求
JsHttpResponse response;
switch (method) {
case "GET":
response = httpClient.get(url);
break;
case "POST":
response = httpClient.post(url, body);
break;
case "PUT":
response = httpClient.put(url, body);
break;
case "DELETE":
response = httpClient.delete(url);
break;
case "PATCH":
response = httpClient.patch(url, body);
break;
case "HEAD":
response = httpClient.getNoRedirect(url);
break;
default:
throw new IllegalArgumentException("不支持的HTTP方法: " + method);
}
log.debug("Fetch请求完成: {} {} - 状态码: {}", method, url, response.statusCode());
return response;
} catch (Exception e) {
log.error("Fetch请求失败: {} - {}", url, e.getMessage());
throw new RuntimeException("Fetch请求失败: " + e.getMessage(), e);
}
}
}

45
parser/src/main/java/cn/qaiu/parser/customjs/JsParserExecutor.java
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@@ -14,8 +14,13 @@ import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.script.ScriptEngine;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
/**
* JavaScript解析器执行器
@@ -30,17 +35,19 @@ public class JsParserExecutor implements IPanTool {
private static final WorkerExecutor EXECUTOR = WebClientVertxInit.get().createSharedWorkerExecutor("parser-executor", 32);
private static String FETCH_RUNTIME_JS = null;
private final CustomParserConfig config;
private final ShareLinkInfo shareLinkInfo;
private final ScriptEngine engine;
private final JsHttpClient httpClient;
private final JsLogger jsLogger;
private final JsShareLinkInfoWrapper shareLinkInfoWrapper;
private final JsFetchBridge fetchBridge;
public JsParserExecutor(ShareLinkInfo shareLinkInfo, CustomParserConfig config) {
this.config = config;
this.shareLinkInfo = shareLinkInfo;
this.engine = initEngine();
// 检查是否有代理配置
JsonObject proxyConfig = null;
@@ -51,6 +58,34 @@ public class JsParserExecutor implements IPanTool {
this.httpClient = new JsHttpClient(proxyConfig);
this.jsLogger = new JsLogger("JsParser-" + config.getType());
this.shareLinkInfoWrapper = new JsShareLinkInfoWrapper(shareLinkInfo);
this.fetchBridge = new JsFetchBridge(httpClient);
this.engine = initEngine();
}
/**
* 加载fetch运行时JS代码
* @return fetch运行时代码
*/
static String loadFetchRuntime() {
if (FETCH_RUNTIME_JS != null) {
return FETCH_RUNTIME_JS;
}
try (InputStream is = JsParserExecutor.class.getClassLoader().getResourceAsStream("fetch-runtime.js")) {
if (is == null) {
log.warn("未找到fetch-runtime.js文件，fetch API将不可用");
return "";
}
try (BufferedReader reader = new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8))) {
FETCH_RUNTIME_JS = reader.lines().collect(Collectors.joining("\n"));
log.debug("Fetch运行时加载成功，大小: {} 字符", FETCH_RUNTIME_JS.length());
return FETCH_RUNTIME_JS;
}
} catch (Exception e) {
log.error("加载fetch-runtime.js失败", e);
return "";
}
}
/**
@@ -81,6 +116,7 @@ public class JsParserExecutor implements IPanTool {
engine.put("http", httpClient);
engine.put("logger", jsLogger);
engine.put("shareLinkInfo", shareLinkInfoWrapper);
engine.put("JavaFetch", fetchBridge);
// 禁用Java对象访问
engine.eval("var Java = undefined;");
@@ -90,6 +126,13 @@ public class JsParserExecutor implements IPanTool {
engine.eval("var org = undefined;");
engine.eval("var com = undefined;");
// 加载fetch运行时（Promise和fetch API polyfill）
String fetchRuntime = loadFetchRuntime();
if (!fetchRuntime.isEmpty()) {
engine.eval(fetchRuntime);
log.debug("✅ Fetch API和Promise polyfill注入成功");
}
log.debug("🔒 安全的JavaScript引擎初始化成功，解析器类型: {}", config.getType());
// 执行JavaScript代码

10
parser/src/main/java/cn/qaiu/parser/customjs/JsPlaygroundExecutor.java
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@@ -42,6 +42,7 @@ public class JsPlaygroundExecutor {
private final JsHttpClient httpClient;
private final JsPlaygroundLogger playgroundLogger;
private final JsShareLinkInfoWrapper shareLinkInfoWrapper;
private final JsFetchBridge fetchBridge;
/**
* 创建演练场执行器
@@ -62,6 +63,7 @@ public class JsPlaygroundExecutor {
this.httpClient = new JsHttpClient(proxyConfig);
this.playgroundLogger = new JsPlaygroundLogger();
this.shareLinkInfoWrapper = new JsShareLinkInfoWrapper(shareLinkInfo);
this.fetchBridge = new JsFetchBridge(httpClient);
this.engine = initEngine();
}
@@ -84,6 +86,7 @@ public class JsPlaygroundExecutor {
engine.put("http", httpClient);
engine.put("logger", playgroundLogger);
engine.put("shareLinkInfo", shareLinkInfoWrapper);
engine.put("JavaFetch", fetchBridge);
// 禁用Java对象访问
engine.eval("var Java = undefined;");
@@ -93,6 +96,13 @@ public class JsPlaygroundExecutor {
engine.eval("var org = undefined;");
engine.eval("var com = undefined;");
// 加载fetch运行时（Promise和fetch API polyfill）
String fetchRuntime = JsParserExecutor.loadFetchRuntime();
if (!fetchRuntime.isEmpty()) {
engine.eval(fetchRuntime);
playgroundLogger.infoJava("✅ Fetch API和Promise polyfill注入成功");
}
playgroundLogger.infoJava("🔒 安全的JavaScript引擎初始化成功（演练场）");
// 执行JavaScript代码