我在从 xml web 服务读取大数据时遇到问题，xml 文件大约 5.5Mb，代码崩溃并引发内存不足错误
这是我的功能
private static HttpResponse executePostHttpRequest(String baseUrl,
String names[],
String values[]) throws ClientProtocolException,
IOException {
final HttpClient client = newHttpClientInstance();
HttpPost request = new HttpPost(baseUrl);
boolean haveData = (names != null) && (values != null);
// if we have data, form it into request
if (haveData) {
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(values.length);
for (int i = 0; i < values.length; i++) {
nameValuePairs.add(new BasicNameValuePair(names[i], values[i]));
}
try {
request.setEntity(new UrlEncodedFormEntity(nameValuePairs, "utf-8"));
} catch (UnsupportedEncodingException e) {
request.setEntity(new UrlEncodedFormEntity(nameValuePairs));
}
}
request.addHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
// return response created by executing this request
return client.execute(request);
和 这是我的笨蛋
12-05 23:30:31.813: I/dalvikvm-heap(443): Forcing collection of SoftReferences for 4842758-byte allocation
12-05 23:30:31.964: D/dalvikvm(443): GC freed 0 objects / 0 bytes in 143ms
12-05 23:30:31.964: E/dalvikvm-heap(443): Out of memory on a 4842758-byte allocation.
12-05 23:30:31.964: I/dalvikvm(443): "pool-1-thread-3" prio=5 tid=35 RUNNABLE
12-05 23:30:31.977: I/dalvikvm(443): | group="main" sCount=0 dsCount=0 s=N obj=0x44f92608 self=0x3d92a0
12-05 23:30:31.977: I/dalvikvm(443): | sysTid=460 nice=0 sched=0/0 cgrp=default handle=3901200
12-05 23:30:31.984: I/dalvikvm(443): at java.lang.AbstractStringBuilder.enlargeBuffer(AbstractStringBuilder.java:~97)
12-05 23:30:31.984: I/dalvikvm(443): at java.lang.AbstractStringBuilder.append0(AbstractStringBuilder.java:155)
12-05 23:30:31.984: I/dalvikvm(443): at java.lang.StringBuilder.append(StringBuilder.java:216)
12-05 23:30:31.984: I/dalvikvm(443): at com.XXXXXXXXX.api.HttpUtils.convertStreamToString(HttpUtils.java:308)
12-05 23:30:31.993: I/dalvikvm(443): at com.XXXXXXXXX.api.HttpUtils.responseToString(HttpUtils.java:331)
12-05 23:30:31.993: I/dalvikvm(443): at com.XXXXXXXXX.api.HttpUtils.executeRequest(HttpUtils.java:208)
12-05 23:30:31.993: I/dalvikvm(443): at com.XXXXXXXXX.api.HttpUtils.access$0(HttpUtils.java:188)
12-05 23:30:31.993: I/dalvikvm(443): at com.XXXXXXXXX.api.HttpUtils$3.run(HttpUtils.java:171)
12-05 23:30:31.993: I/dalvikvm(443): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068)
12-05 23:30:31.993: I/dalvikvm(443): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561)
12-05 23:30:31.993: I/dalvikvm(443): at java.lang.Thread.run(Thread.java:1096)
12-05 23:30:33.024: D/HttpUtils(443): Throwable: java.lang.OutOfMemoryError
12-05 23:30:35.383: D/HttpUtils(443): Throwable: java.lang.OutOfMemoryError
有什么建议吗？
最佳答案
压缩 xml，文本压缩得很好，我遇到了类似的问题(JSON 而不是 XML)，它不仅解决了我的内存问题，还使应用程序快了一百万倍。
在我的具体案例中，JSON 字符串从 5 Mb 变为 200kb。
朝这个方向看:Gzip in Android
关于Android HttpClient 内存不足错误(xml 数据)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/8393464/