@Override
public synchronized void push(Request request, Task task) {
if (logger.isDebugEnabled()) {
logger.debug("push to queue " + request.getUrl());
}
if (urls.add(request.getUrl())) {
queue.add(request);
}
}
@Override
public synchronized void push(Request request, Task task) {
Jedis jedis = pool.getResource();
// 使用SortedSet进行url去重
if (jedis.zrank(SET_PREFIX + task.getUUID(), request.getUrl()) == null) {
// 使用List保存队列
jedis.rpush(QUEUE_PREFIX + task.getUUID(), request.getUrl());
jedis.zadd(SET_PREFIX + task.getUUID(), System.currentTimeMillis(), request.getUrl());
}
pool.returnResource(jedis);
}
/**
* 将当前页面解析到的字段传递给新的request
*
* @param page
* @param nextRequest
*/
private void transmitResultItem(Page page, Request nextRequest) {
// 将当前page解析下来的字段转交到nextRequest中
Map<String, Object> fields = page.getResultItems().getAll();
for (Entry<String, Object> entry : fields.entrySet()) {
nextRequest.addInheritField(entry.getKey(), entry.getValue());
}
}
protected Page handleResponse(
Request request, String charset, HttpResponse httpResponse, Task task) throws IOException {
String content = IOUtils.toString(httpResponse.getEntity().getContent(), charset);
Page page = new Page();
page.setRawText(content);
page.setUrl(new PlainText(request.getUrl()));
page.setRequest(request);
page.setStatusCode(httpResponse.getStatusLine().getStatusCode());
return page;
}
@Override
public Page download(Request request, Task task) {
checkInit();
WebDriver webDriver;
try {
webDriver = webDriverPool.get();
} catch (InterruptedException e) {
logger.warn("interrupted", e);
return null;
}
logger.info("downloading page " + request.getUrl());
webDriver.get(request.getUrl());
try {
Thread.sleep(sleepTime);
} catch (InterruptedException e) {
e.printStackTrace();
}
WebDriver.Options manage = webDriver.manage();
Site site = task.getSite();
if (site.getCookies() != null) {
for (Map.Entry<String, String> cookieEntry : site.getCookies().entrySet()) {
Cookie cookie = new Cookie(cookieEntry.getKey(), cookieEntry.getValue());
manage.addCookie(cookie);
}
}
/*
* TODO You can add mouse event or other processes
*
* @author: [email protected]
*/
WebElement webElement = webDriver.findElement(By.xpath("/html"));
String content = webElement.getAttribute("outerHTML");
Page page = new Page();
page.setRawText(content);
page.setHtml(new Html(UrlUtils.fixAllRelativeHrefs(content, request.getUrl())));
page.setUrl(new PlainText(request.getUrl()));
page.setRequest(request);
webDriverPool.returnToPool(webDriver);
return page;
}
/*
* 原则：
* 当前page下要求解析出来的字段都要保证在当前page生命周期内解析完成。
* 哪些规则是当前page下的，由page.getRequest().getFiledRuleId()决定
*/
@Override
public void process(Page page) throws PageProcessException {
Request originalReq = page.getRequest(); // 源rquest,非null
Integer fieldRuleId = originalReq.getFieldRuleId();
if (fieldRuleId != null) {
if (fieldRuleId == 20) System.out.println("test");
}
Request nextRequest = originalReq.getNextRequest(); // 抽出下一步request,允许null
Request templast = nextRequest; // 创建请求链时需要的临时节点
// 找到当前page下要求解析的字段
final List<SpiderFieldRule> dependenceFieldRules = new ArrayList<SpiderFieldRule>();
for (SpiderFieldRule fieldRule : fieldRules) {
if (fieldRule.getParentId() == (fieldRuleId == null ? 0 : fieldRuleId)) {
dependenceFieldRules.add(fieldRule);
}
}
// 开始解析当前page下要求解析的字段
for (SpiderFieldRule fieldRule : dependenceFieldRules) {
List<String> results;
StringBuilder sb;
switch (fieldRule.getType()) {
case 0:
results = page.getHtml().regex(fieldRule.getRule()).all();
if (results.size() == 0) {
if (fieldRule.getAllowEmpty() == 1) {
throw new PageProcessException(
String.format(
"{fieldname:@#%s@#,fieldrule:@#%s@#,parentId:@#%d@#,type:@#regex@#}",
fieldRule.getFieldName(), fieldRule.getRule(), fieldRule.getParentId()));
}
}
// 判断是否会产生新的下载请求,如果产生新的下载请求，则当前规则只解析顶级层，如果有子规则，要=到新的下载完成之后才能解析
if (fieldRule.getAdditionDownload() == 1) {
// 将fieldRule.getId()保存下来，新请求的页面将筛选parentid为该id的规则进行解析
for (String result : results) {
if (!result.startsWith("http")) {
result = "http://" + site.getDomain() + result.trim().replace("|", "%7C");
}
Request additionReq = new Request(result);
additionReq.setFieldRuleId(fieldRule.getId());
if (templast == null) {
nextRequest = additionReq;
templast = nextRequest;
} else {
templast.setNextRequest(additionReq);
templast = additionReq;
}
if (fieldRule.getNeedPersistence() == 0) {
sb = new StringBuilder();
sb.append(result + ",");
page.putField(
fieldRule.getFieldName(),
StringUtils.substringBeforeLast(sb.toString().trim(), ","));
}
}
} else if (fieldRule.getAdditionRequest() == 1) {
for (String result : results) {
if (!result.startsWith("http")) {
result = "http://" + site.getDomain() + result.trim().replace("|", "%7C");
}
Request additionReq = new Request(result);
additionReq.setFieldRuleId(fieldRule.getId());
transmitResultItem(page, additionReq);
page.addTargetRequest(additionReq);
if (fieldRule.getNeedPersistence() == 0) {
sb = new StringBuilder();
sb.append(result + ",");
page.putField(
fieldRule.getFieldName(),
StringUtils.substringBeforeLast(sb.toString().trim(), ","));
}
}
} else {
if (fieldRule.getNeedPersistence() == 0) {
sb = new StringBuilder();
for (String result : results) {
sb.append(result + ",");
}
page.putField(
fieldRule.getFieldName(),
StringUtils.substringBeforeLast(sb.toString().trim(), ","));
}
ruleComplierLoop(fieldRule.getId(), page, nextRequest, templast);
}
break;
case 1:
results = page.getHtml().xpath(fieldRule.getRule()).all();
if (results.size() == 0) {
if (fieldRule.getAllowEmpty() == 1) {
throw new PageProcessException(
String.format(
"{fieldname:@#%s@#,fieldrule:@#%s@#,parentId:@#%d@#,type:@#xpath@#}",
fieldRule.getFieldName(), fieldRule.getRule(), fieldRule.getParentId()));
}
}
// 判断是否会产生新的下载请求
if (fieldRule.getAdditionDownload() == 1) {
// 将fieldRule.getId()保存下来，新请求的页面将筛选parentid为该id的规则进行解析
for (String result : results) {
if (!result.startsWith("http")) {
result = "http://" + site.getDomain() + result.trim().replace("|", "%7C");
}
Request additionReq = new Request(result);
additionReq.setFieldRuleId(fieldRule.getId());
if (templast == null) {
nextRequest = additionReq;
templast = nextRequest;
} else {
templast.setNextRequest(additionReq);
templast = additionReq;
}
if (fieldRule.getNeedPersistence() == 0) {
sb = new StringBuilder();
sb.append(result + ",");
page.putField(
fieldRule.getFieldName(),
StringUtils.substringBeforeLast(sb.toString().trim(), ","));
}
}
} else if (fieldRule.getAdditionRequest() == 1) {
for (String result : results) {
if (!result.startsWith("http")) {
result = "http://" + site.getDomain() + result.trim().replace("|", "%7C");
}
Request additionReq = new Request(result);
additionReq.setFieldRuleId(fieldRule.getId());
transmitResultItem(page, additionReq);
page.addTargetRequest(additionReq);
if (fieldRule.getNeedPersistence() == 0) {
sb = new StringBuilder();
sb.append(result + ",");
page.putField(
fieldRule.getFieldName(),
StringUtils.substringBeforeLast(sb.toString().trim(), ","));
}
}
} else {
if (fieldRule.getNeedPersistence() == 0) {
sb = new StringBuilder();
for (String result : results) {
sb.append(result + ",");
}
page.putField(
fieldRule.getFieldName(),
StringUtils.substringBeforeLast(sb.toString().trim(), ","));
}
ruleComplierLoop(fieldRule.getId(), page, nextRequest, templast);
}
break;
case 2:
results = page.getHtml().css(fieldRule.getRule()).all();
if (results.size() == 0) {
if (fieldRule.getAllowEmpty() == 1) {
throw new PageProcessException(
String.format(
"{fieldname:@#%s@#,fieldrule:@#%s@#,parentId:@#%d@#,type:@#css@#}",
fieldRule.getFieldName(), fieldRule.getRule(), fieldRule.getParentId()));
}
}
// 判断是否会产生新的下载请求
if (fieldRule.getAdditionDownload() == 1) {
// 将fieldRule.getId()保存下来，新请求的页面将筛选parentid为该id的规则进行解析
for (String result : results) {
if (!result.startsWith("http")) {
result = "http://" + site.getDomain() + result.trim().replace("|", "%7C");
}
Request additionReq = new Request(result);
additionReq.setFieldRuleId(fieldRule.getId());
if (templast == null) {
nextRequest = additionReq;
templast = nextRequest;
} else {
templast.setNextRequest(additionReq);
templast = additionReq;
}
if (fieldRule.getNeedPersistence() == 0) {
sb = new StringBuilder();
sb.append(result + ",");
page.putField(
fieldRule.getFieldName(),
StringUtils.substringBeforeLast(sb.toString().trim(), ","));
}
}
} else if (fieldRule.getAdditionRequest() == 1) {
for (String result : results) {
if (!result.startsWith("http")) {
result = "http://" + site.getDomain() + result.trim().replace("|", "%7C");
}
Request additionReq = new Request(result);
additionReq.setFieldRuleId(fieldRule.getId());
transmitResultItem(page, additionReq);
page.addTargetRequest(additionReq);
if (fieldRule.getNeedPersistence() == 0) {
sb = new StringBuilder();
sb.append(result + ",");
page.putField(
fieldRule.getFieldName(),
StringUtils.substringBeforeLast(sb.toString().trim(), ","));
}
}
} else {
if (fieldRule.getNeedPersistence() == 0) {
sb = new StringBuilder();
for (String result : results) {
sb.append(result + ",");
}
page.putField(
fieldRule.getFieldName(),
StringUtils.substringBeforeLast(sb.toString().trim(), ","));
}
ruleComplierLoop(fieldRule.getId(), page, nextRequest, templast);
}
break;
default:
if (page.getRequest().getExtra(fieldRule.getFieldName()) == null) {
throw new PageProcessException(
String.format(
"{fieldname:@#%s@#,fieldrule:@#%s@#,type:@#orig@#}",
fieldRule.getFieldName(), fieldRule.getRule()));
}
page.putField(
fieldRule.getFieldName(), page.getRequest().getExtra(fieldRule.getFieldName()));
break;
}
}
// 最后判断一下当前page有没有产生新的下载请求或任务请求，如果有，将page.getResultItems()中的解析结果通过request传递到下一个page中去
if (nextRequest != null) {
transmitResultItem(page, nextRequest);
page.setSkip(true);
originalReq.setNextRequest(nextRequest);
}
}
/**
* 当某个解析规则不会产生新的下载请求时(这种情况下当前page生命周期已经结束)，当前page必须解析完该规则下的所有字段，存在子规则层层嵌套的情况
*
* @param parentRuleId
* @param page
* @param nextRequest
* @param templast
* @throws PageProcessException
*/
private void ruleComplierLoop(int parentRuleId, Page page, Request nextRequest, Request templast)
throws PageProcessException {
List<SpiderFieldRule> childs = new ArrayList<SpiderFieldRule>();
for (SpiderFieldRule fieldRule : fieldRules) {
if (fieldRule.getParentId() == parentRuleId) {
childs.add(fieldRule);
}
}
if (childs.size() == 0) {
return;
} else {
for (SpiderFieldRule child : childs) {
List<String> results;
StringBuilder sb;
switch (child.getType()) {
case 0:
results = page.getHtml().regex(child.getRule()).all();
if (results.size() == 0) {
if (child.getAllowEmpty() == 1) {
throw new PageProcessException(
String.format(
"{fieldname:@#%s@#,fieldrule:@#%s@#,parentId:@#%d@#,type:@#regex@#}",
child.getFieldName(), child.getRule(), child.getParentId()));
}
}
// 判断是否会产生新的下载请求
if (child.getAdditionDownload() == 1) {
// page.setIncludeAddition(true);
// 将fieldRule.getId()保存下来，新请求的页面将筛选parentid为该id的规则进行解析
for (String result : results) {
if (!result.startsWith("http")) {
result = "http://" + site.getDomain() + result.trim().replace("|", "%7C");
}
Request additionReq = new Request(result);
additionReq.setFieldRuleId(child.getId());
if (templast == null) {
nextRequest = additionReq;
templast = nextRequest;
} else {
templast.setNextRequest(additionReq);
templast = additionReq;
}
if (child.getNeedPersistence() == 0) {
sb = new StringBuilder();
sb.append(result + ",");
page.putField(
child.getFieldName(),
StringUtils.substringBeforeLast(sb.toString().trim(), ","));
}
}
} else if (child.getAdditionRequest() == 1) {
for (String result : results) {
if (!result.startsWith("http")) {
result = "http://" + site.getDomain() + result.trim().replace("|", "%7C");
}
Request additionReq = new Request(result);
additionReq.setFieldRuleId(child.getId());
page.addTargetRequest(additionReq);
if (child.getNeedPersistence() == 0) {
sb = new StringBuilder();
sb.append(result + ",");
page.putField(
child.getFieldName(),
StringUtils.substringBeforeLast(sb.toString().trim(), ","));
}
}
} else {
if (child.getNeedPersistence() == 0) {
sb = new StringBuilder();
for (String result : results) {
sb.append(result + ",");
}
page.putField(
child.getFieldName(),
StringUtils.substringBeforeLast(sb.toString().trim(), ","));
}
ruleComplierLoop(child.getId(), page, nextRequest, templast);
}
break;
case 1:
results = page.getHtml().xpath(child.getRule()).all();
if (results.size() == 0) {
if (child.getAllowEmpty() == 1) {
throw new PageProcessException(
String.format(
"{fieldname:@#%s@#,fieldrule:@#%s@#,parentId:@#%d@#,type:@#xpath@#}",
child.getFieldName(), child.getRule(), child.getParentId()));
}
}
// 判断是否会产生新的下载请求
if (child.getAdditionDownload() == 1) {
// page.setIncludeAddition(true);
// 将fieldRule.getId()保存下来，新请求的页面将筛选parentid为该id的规则进行解析
for (String result : results) {
if (!result.startsWith("http")) {
result = "http://" + site.getDomain() + result.trim().replace("|", "%7C");
}
Request additionReq = new Request(result);
additionReq.setFieldRuleId(child.getId());
if (templast == null) {
nextRequest = additionReq;
templast = nextRequest;
} else {
templast.setNextRequest(additionReq);
templast = additionReq;
}
if (child.getNeedPersistence() == 0) {
sb = new StringBuilder();
sb.append(result + ",");
page.putField(
child.getFieldName(),
StringUtils.substringBeforeLast(sb.toString().trim(), ","));
}
}
} else if (child.getAdditionRequest() == 1) {
for (String result : results) {
if (!result.startsWith("http")) {
result = "http://" + site.getDomain() + result.trim().replace("|", "%7C");
}
Request additionReq = new Request(result);
additionReq.setFieldRuleId(child.getId());
page.addTargetRequest(additionReq);
if (child.getNeedPersistence() == 0) {
sb = new StringBuilder();
sb.append(result + ",");
page.putField(
child.getFieldName(),
StringUtils.substringBeforeLast(sb.toString().trim(), ","));
}
}
} else {
if (child.getNeedPersistence() == 0) {
sb = new StringBuilder();
for (String result : results) {
sb.append(result + ",");
}
page.putField(
child.getFieldName(),
StringUtils.substringBeforeLast(sb.toString().trim(), ","));
}
ruleComplierLoop(child.getId(), page, nextRequest, templast);
}
break;
case 2:
results = page.getHtml().css(child.getRule()).all();
if (results.size() == 0) {
if (child.getAllowEmpty() == 1) {
throw new PageProcessException(
String.format(
"{fieldname:@#%s@#,fieldrule:@#%s@#,parentId:@#%d@#,type:@#css@#}",
child.getFieldName(), child.getRule(), child.getParentId()));
}
}
// 判断是否会产生新的下载请求
if (child.getAdditionDownload() == 1) {
// page.setIncludeAddition(true);
// 将fieldRule.getId()保存下来，新请求的页面将筛选parentid为该id的规则进行解析
for (String result : results) {
if (!result.startsWith("http")) {
result = "http://" + site.getDomain() + result.trim().replace("|", "%7C");
}
Request additionReq = new Request(result);
additionReq.setFieldRuleId(child.getId());
if (templast == null) {
nextRequest = additionReq;
templast = nextRequest;
} else {
templast.setNextRequest(additionReq);
templast = additionReq;
}
if (child.getNeedPersistence() == 0) {
sb = new StringBuilder();
sb.append(result + ",");
page.putField(
child.getFieldName(),
StringUtils.substringBeforeLast(sb.toString().trim(), ","));
}
}
} else if (child.getAdditionRequest() == 1) {
for (String result : results) {
if (!result.startsWith("http")) {
result = "http://" + site.getDomain() + result.trim().replace("|", "%7C");
}
Request additionReq = new Request(result);
additionReq.setFieldRuleId(child.getId());
page.addTargetRequest(additionReq);
if (child.getNeedPersistence() == 0) {
sb = new StringBuilder();
sb.append(result + ",");
page.putField(
child.getFieldName(),
StringUtils.substringBeforeLast(sb.toString().trim(), ","));
}
}
} else {
if (child.getNeedPersistence() == 0) {
sb = new StringBuilder();
for (String result : results) {
sb.append(result + ",");
}
page.putField(
child.getFieldName(),
StringUtils.substringBeforeLast(sb.toString().trim(), ","));
}
ruleComplierLoop(child.getId(), page, nextRequest, templast);
}
break;
default:
if (page.getRequest().getExtra(child.getFieldName()) == null) {
throw new PageProcessException(
String.format(
"{fieldname:@#%s@#,fieldrule:@#%s@#,type:@#orig@#}",
child.getFieldName(), child.getRule()));
}
page.putField(child.getFieldName(), page.getRequest().getExtra(child.getFieldName()));
break;
}
}
}
}
@Override
public Page download(Request request, Task task) {
Site site = null;
if (task != null) {
site = task.getSite();
}
Set<Integer> acceptStatCode;
String charset = null;
Map<String, String> headers = null;
if (site != null) {
acceptStatCode = site.getAcceptStatCode();
charset = site.getCharset();
headers = site.getHeaders();
} else {
acceptStatCode = Sets.newHashSet(200);
}
logger.info("downloading page " + request.getUrl());
RequestBuilder requestBuilder = RequestBuilder.get().setUri(request.getUrl());
if (headers != null) {
for (Map.Entry<String, String> headerEntry : headers.entrySet()) {
requestBuilder.addHeader(headerEntry.getKey(), headerEntry.getValue());
}
}
RequestConfig.Builder requestConfigBuilder =
RequestConfig.custom()
.setConnectionRequestTimeout(site.getTimeOut())
.setSocketTimeout(site.getTimeOut())
.setConnectTimeout(site.getTimeOut())
.setCookieSpec(CookieSpecs.BEST_MATCH);
if (site != null && site.getHttpProxy() != null) {
requestConfigBuilder.setProxy(site.getHttpProxy());
}
requestBuilder.setConfig(requestConfigBuilder.build());
CloseableHttpResponse httpResponse = null;
try {
httpResponse = getHttpClient(site).execute(requestBuilder.build());
int statusCode = httpResponse.getStatusLine().getStatusCode();
if (acceptStatCode.contains(statusCode)) {
// charset
if (charset == null) {
String value = httpResponse.getEntity().getContentType().getValue();
charset = UrlUtils.getCharset(value);
}
return handleResponse(request, charset, httpResponse, task);
} else {
logger.warn("code error " + statusCode + "\t" + request.getUrl());
return null;
}
} catch (IOException e) {
logger.warn("download page " + request.getUrl() + " error", e);
if (site.getCycleRetryTimes() > 0) {
return addToCycleRetry(request, site);
}
return null;
} finally {
try {
if (httpResponse != null) {
// ensure the connection is released back to pool
EntityUtils.consume(httpResponse.getEntity());
}
} catch (IOException e) {
logger.warn("close response fail", e);
}
}
}
@Override
protected void pushWhenNoDuplicate(Request request, Task task) {
queue.add(request);
fileUrlWriter.println(request.getUrl());
}
