//直播课程详情作业详情
@FormUrlEncoded
@POST(LoginContant.ZBXQ_DETAIL)
Call<ZBXQBean> getSZBXQ(@Field("id") Integer id);
//用法
public ZBXQBean getData() {
final ZBXQBean[] token = {null};
//这里获取你的Service借口里的方法
Call<ZBXQBean> szbxq = getHwService().getSZBXQ(2);
new EnhancedCall<ZBXQBean>(szbxq)//泛型填自己自定义对象
.dataClassName(ZBXQBean.class)//返回自定义对象的class文件
.useCache(true)
.enqueue(new EnhancedCallback<ZBXQBean>() {
@Override
public void onResponse(Call<ZBXQBean> call, Response<ZBXQBean> response) {
//网路数据返回
token[0] =response.body();
}
@Override
public void onFailure(Call<ZBXQBean> call, Throwable t) {
}
@Override
public void onGetCache(ZBXQBean tokenBean) {
token[0] = tokenBean;
//缓存数据返回
}
});
return token[0];
}
//废话不多说先到依赖
implementation 'com.google.code.gson:gson:2.8.5'
implementation 'com.android.support:design:26.1.0'
implementation 'com.squareup.okhttp3:okhttp:3.10.0'
//新版本
implementation 'com.squareup.retrofit2:retrofit:2.4.0'
implementation 'com.squareup.retrofit2:converter-gson:2.3.0'
implementation 'com.squareup.retrofit2:adapter-rxjava:2.1.0'
implementation 'io.reactivex:rxandroid:1.2.1'
implementation 'io.reactivex:rxjava:1.1.6'
implementation 'com.squareup.okhttp3:logging-interceptor:3.4.1'//使用的工具类
public class RetorfitUtils {
private static volatile RetorfitUtils retorfitUtils;
public static RetorfitUtils getInstence() {
if (null == retorfitUtils) {
synchronized (RetorfitUtils.class) {
if (null == retorfitUtils) {
retorfitUtils = new RetorfitUtils();
}
}
}
return retorfitUtils;
}
private RetorfitUtils() {
}
//高级缓存支持POST
private Retrofit getRetrofits(String baseurl) {
OkHttpClient.Builder builder = new OkHttpClient.Builder();
builder.addInterceptor(new EnhancedCacheInterceptor())//高级缓存拦截器
.addNetworkInterceptor(new Interceptor() {
@Override
public Response intercept(Chain chain) throws IOException {
Request request = chain.request().newBuilder()
//加入自己的请求头，
.addHeader("apptoken", String.valueOf(SPUtil.getInstance().get(Keys.TOKEN, "")))
.addHeader("user-agent", String.valueOf(SPUtil.getInstance().get(Keys.USERAGENT, "")))
.addHeader("Authorization", "")
.addHeader("did", String.valueOf(SPUtil.getInstance().get(Keys.DID, "")))
.addHeader("cid", "dd2a152f6d132980462385b10b8487bb")
.addHeader("userId", String.valueOf(SPUtil.getInstance().get(Keys.ID, 0)))
.addHeader("oCode", "350010")
.addHeader("appType", "univstarUnion")
.build();
return chain.proceed(request);
}
});
OkHttpClient client = builder.build();
return new Retrofit.Builder()
.baseUrl(baseurl)
.addCallAdapterFactory(RxJavaCallAdapterFactory.create())
.addConverterFactory(GsonConverterFactory.create())
.client(client)
.build();
}
//普通缓存不支持POST
private Retrofit getRetrofit(String baseurl) {
File cacheDir = new File(SUtils.getApp().getCacheDir(), "response");
//缓存的最大尺寸10m
Cache cache = new Cache(cacheDir, 1024 * 1024 * 50);
OkHttpClient.Builder builder = new OkHttpClient.Builder()
.cache(cache)
.addInterceptor(new CacheInterceptor())
.addNetworkInterceptor(new Interceptor() {
@Override
public Response intercept(Chain chain) throws IOException {
Request request = chain.request().newBuilder()
//加入自己的请求头，
.addHeader("apptoken", String.valueOf(SPUtil.getInstance().get(Keys.TOKEN, "")))
.addHeader("user-agent", String.valueOf(SPUtil.getInstance().get(Keys.USERAGENT, "")))
.addHeader("Authorization", "")
.addHeader("did", String.valueOf(SPUtil.getInstance().get(Keys.DID, "")))
.addHeader("cid", "dd2a152f6d132980462385b10b8487bb")
.addHeader("userId", String.valueOf(SPUtil.getInstance().get(Keys.ID, 0)))
.addHeader("oCode", "350010")
.addHeader("appType", "univstarUnion")
.build();
return chain.proceed(request);
}
});
OkHttpClient client = builder.build();
return new Retrofit.Builder()
.baseUrl(baseurl)
.addCallAdapterFactory(RxJavaCallAdapterFactory.create())
.addConverterFactory(GsonConverterFactory.create())
.client(client)
.build();
}
//获取Retrofit
private Retrofit getRetrofit() {
return getRetrofits(LoginContant.BASE_URL_D);
}
//获取Service
public LoginService getLoginService() {
return getRetrofit().create(LoginService.class);
}
public HwService getHwService() {
return getRetrofit().create(HwService.class);
}
public YSQServies getYSQServies() {
return getRetrofit().create(YSQServies.class);
}
/**
* 检查网络是否可用
*
* @param context
* @return
*/
public static boolean isNetworkAvailable(Context context) {
//判断是否有网络
if (context != null) {
ConnectivityManager mConnectivityManager = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();
if (mNetworkInfo != null) {
return mNetworkInfo.isAvailable();
}
}
return false;
}
}
//工具类所依赖的类
public class CacheInterceptor implements Interceptor {
@Override
public Response intercept(Chain chain) throws IOException {
Request request = chain.request();
boolean netAvailable = NetWorkUtil.isNetAvailable(SUtils.getApp());
if (netAvailable) {
request = request.newBuilder()
//网络可用 强制从网络获取数据
.cacheControl(CacheControl.FORCE_NETWORK)
.build();
} else {
request = request.newBuilder()
//网络不可用 从缓存获取
.cacheControl(CacheControl.FORCE_CACHE)
.build();
}
Response response = chain.proceed(request);
if (netAvailable) {
response = response.newBuilder()
.removeHeader("Pragma")
// 有网络时 设置缓存超时时间1个小时
.header("Cache-Control", "public, max-age=" + 60 * 60)
.build();
} else {
response = response.newBuilder()
.removeHeader("Pragma")
// 无网络时，设置超时为1周
.header("Cache-Control", "public, only-if-cached, max-stale=" + 7 * 24 * 60 * 60)
.build();
}
return response;
}
}
public interface CacheCallback {
void onGetCache(String cache);
}
public final class CacheManager {
public static final String TAG = "CacheManager";
//max cache size 10mb
private static final long DISK_CACHE_SIZE = 1024 * 1024 * 10;
private static final int DISK_CACHE_INDEX = 0;
private static final String CACHE_DIR = "responses";
private DiskLruCache mDiskLruCache;
private volatile static CacheManager mCacheManager;
public static CacheManager getInstance() {
if (mCacheManager == null) {
synchronized (CacheManager.class) {
if (mCacheManager == null) {
mCacheManager = new CacheManager();
}
}
}
return mCacheManager;
}
private CacheManager() {
File diskCacheDir = getDiskCacheDir(SUtils.getApp(), CACHE_DIR);
if (!diskCacheDir.exists()) {
boolean b = diskCacheDir.mkdirs();
Log.d(TAG, "!diskCacheDir.exists() --- diskCacheDir.mkdirs()=" + b);
}
if (diskCacheDir.getUsableSpace() > DISK_CACHE_SIZE) {
try {
mDiskLruCache = DiskLruCache.open(diskCacheDir,
getAppVersion(SUtils.getApp()), 1/*一个key对应多少个文件*/, DISK_CACHE_SIZE);
Log.d(TAG, "mDiskLruCache created");
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* 同步设置缓存
*/
public void putCache(String key, String value) {
if (mDiskLruCache == null) return;
OutputStream os = null;
try {
DiskLruCache.Editor editor = mDiskLruCache.edit(encryptMD5(key));
os = editor.newOutputStream(DISK_CACHE_INDEX);
os.write(value.getBytes());
os.flush();
editor.commit();
mDiskLruCache.flush();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (os != null) {
try {
os.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
/**
* 异步设置缓存
*/
public void setCache(final String key, final String value) {
new Thread() {
@Override
public void run() {
putCache(key, value);
}
}.start();
}
/**
* 同步获取缓存
*/
public String getCache(String key) {
if (mDiskLruCache == null) {
return null;
}
FileInputStream fis = null;
ByteArrayOutputStream bos = null;
try {
DiskLruCache.Snapshot snapshot = mDiskLruCache.get(encryptMD5(key));
if (snapshot != null) {
fis = (FileInputStream) snapshot.getInputStream(DISK_CACHE_INDEX);
bos = new ByteArrayOutputStream();
byte[] buf = new byte[1024];
int len;
while ((len = fis.read(buf)) != -1) {
bos.write(buf, 0, len);
}
byte[] data = bos.toByteArray();
return new String(data);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (fis != null) {
try {
fis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (bos != null) {
try {
bos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return null;
}
/**
* 异步获取缓存
*/
public void getCache(final String key, final CacheCallback callback) {
new Thread() {
public void run() {
String cache = getCache(key);
callback.onGetCache(cache);
}
}.start();
}
/**
* 移除缓存
*/
public boolean removeCache(String key) {
if (mDiskLruCache != null) {
try {
return mDiskLruCache.remove(encryptMD5(key));
} catch (IOException e) {
e.printStackTrace();
}
}
return false;
}
/**
* 获取缓存目录
*/
private File getDiskCacheDir(Context context, String uniqueName) {
String cachePath = context.getCacheDir().getPath();
return new File(cachePath + File.separator + uniqueName);
}
/**
* 对字符串进行MD5编码
*/
public static String encryptMD5(String string) {
try {
byte[] hash = MessageDigest.getInstance("MD5").digest(
string.getBytes("UTF-8"));
StringBuilder hex = new StringBuilder(hash.length * 2);
for (byte b : hash) {
if ((b & 0xFF) < 0x10) {
hex.append("0");
}
hex.append(Integer.toHexString(b & 0xFF));
}
return hex.toString();
} catch (NoSuchAlgorithmException | UnsupportedEncodingException e) {
e.printStackTrace();
}
return string;
}
/**
* 获取APP版本号
*/
private int getAppVersion(Context context) {
PackageManager pm = context.getPackageManager();
try {
PackageInfo pi = pm.getPackageInfo(context.getPackageName(), 0);
return pi == null ? 0 : pi.versionCode;
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
return 0;
}
}
public final class DiskLruCache implements Closeable {
static final String JOURNAL_FILE = "journal";
static final String JOURNAL_FILE_TMP = "journal.tmp";
static final String MAGIC = "libcore.io.DiskLruCache";
static final String VERSION_1 = "1";
static final long ANY_SEQUENCE_NUMBER = -1;
private static final String CLEAN = "CLEAN";
private static final String DIRTY = "DIRTY";
private static final String REMOVE = "REMOVE";
private static final String READ = "READ";
private static final Charset UTF_8 = Charset.forName("UTF-8");
private static final int IO_BUFFER_SIZE = 8 * 1024;
/*
* This cache uses a journal file named "journal". A typical journal file
* looks like this:
* libcore.io.DiskLruCache
* 1
* 100
* 2
*
* CLEAN 3400330d1dfc7f3f7f4b8d4d803dfcf6 832 21054
* DIRTY 335c4c6028171cfddfbaae1a9c313c52
* CLEAN 335c4c6028171cfddfbaae1a9c313c52 3934 2342
* REMOVE 335c4c6028171cfddfbaae1a9c313c52
* DIRTY 1ab96a171faeeee38496d8b330771a7a
* CLEAN 1ab96a171faeeee38496d8b330771a7a 1600 234
* READ 335c4c6028171cfddfbaae1a9c313c52
* READ 3400330d1dfc7f3f7f4b8d4d803dfcf6
*
* The first five lines of the journal form its header. They are the
* constant string "libcore.io.DiskLruCache", the disk cache's version,
* the application's version, the value count, and a blank line.
*
* Each of the subsequent lines in the file is a record of the state of a
* cache entry. Each line contains space-separated values: a state, a key,
* and optional state-specific values.
* o DIRTY lines track that an entry is actively being created or updated.
* Every successful DIRTY action should be followed by a CLEAN or REMOVE
* action. DIRTY lines without a matching CLEAN or REMOVE indicate that
* temporary files may need to be deleted.
* o CLEAN lines track a cache entry that has been successfully published
* and may be read. A publish line is followed by the lengths of each of
* its values.
* o READ lines track accesses for LRU.
* o REMOVE lines track entries that have been deleted.
*
* The journal file is appended to as cache operations occur. The journal may
* occasionally be compacted by dropping redundant lines. A temporary file named
* "journal.tmp" will be used during compaction; that file should be deleted if
* it exists when the cache is opened.
*/
private final File directory;
private final File journalFile;
private final File journalFileTmp;
private final int appVersion;
private final long maxSize;
private final int valueCount;
private long size = 0;
private Writer journalWriter;
private final LinkedHashMap<String, Entry> lruEntries
= new LinkedHashMap<String, Entry>(0, 0.75f, true);
private int redundantOpCount;
/**
* To differentiate between old and current snapshots, each entry is given
* a sequence number each time an edit is committed. A snapshot is stale if
* its sequence number is not equal to its entry's sequence number.
*/
private long nextSequenceNumber = 0;
/* From java.util.Arrays */
@SuppressWarnings("unchecked")
private static <T> T[] copyOfRange(T[] original, int start, int end) {
final int originalLength = original.length; // For exception priority compatibility.
if (start > end) {
throw new IllegalArgumentException();
}
if (start < 0 || start > originalLength) {
throw new ArrayIndexOutOfBoundsException();
}
final int resultLength = end - start;
final int copyLength = Math.min(resultLength, originalLength - start);
final T[] result = (T[]) Array
.newInstance(original.getClass().getComponentType(), resultLength);
System.arraycopy(original, start, result, 0, copyLength);
return result;
}
/**
* Returns the remainder of 'reader' as a string, closing it when done.
*/
public static String readFully(Reader reader) throws IOException {
try {
StringWriter writer = new StringWriter();
char[] buffer = new char[1024];
int count;
while ((count = reader.read(buffer)) != -1) {
writer.write(buffer, 0, count);
}
return writer.toString();
} finally {
reader.close();
}
}
/**
* Returns the ASCII characters up to but not including the next "\r\n", or
* "\n".
*
* @throws EOFException if the stream is exhausted before the next newline
* character.
*/
public static String readAsciiLine(InputStream in) throws IOException {
// TODO: support UTF-8 here instead
StringBuilder result = new StringBuilder(80);
while (true) {
int c = in.read();
if (c == -1) {
throw new EOFException();
} else if (c == '\n') {
break;
}
result.append((char) c);
}
int length = result.length();
if (length > 0 && result.charAt(length - 1) == '\r') {
result.setLength(length - 1);
}
return result.toString();
}
/**
* Closes 'closeable', ignoring any checked exceptions. Does nothing if 'closeable' is null.
*/
public static void closeQuietly(Closeable closeable) {
if (closeable != null) {
try {
closeable.close();
} catch (RuntimeException rethrown) {
throw rethrown;
} catch (Exception ignored) {
}
}
}
/**
* Recursively delete everything in {@code dir}.
*/
// TODO: this should specify paths as Strings rather than as Files
public static void deleteContents(File dir) throws IOException {
File[] files = dir.listFiles();
if (files == null) {
throw new IllegalArgumentException("not a directory: " + dir);
}
for (File file : files) {
if (file.isDirectory()) {
deleteContents(file);
}
if (!file.delete()) {
throw new IOException("failed to delete file: " + file);
}
}
}
/**
* This cache uses a single background thread to evict entries.
*/
private final ExecutorService executorService = new ThreadPoolExecutor(0, 1,
60L, TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>());
private final Callable<Void> cleanupCallable = new Callable<Void>() {
@Override
public Void call() throws Exception {
synchronized (DiskLruCache.this) {
if (journalWriter == null) {
return null; // closed
}
trimToSize();
if (journalRebuildRequired()) {
rebuildJournal();
redundantOpCount = 0;
}
}
return null;
}
};
private DiskLruCache(File directory, int appVersion, int valueCount, long maxSize) {
this.directory = directory;
this.appVersion = appVersion;
this.journalFile = new File(directory, JOURNAL_FILE);
this.journalFileTmp = new File(directory, JOURNAL_FILE_TMP);
this.valueCount = valueCount;
this.maxSize = maxSize;
}
/**
* Opens the cache in {@code directory}, creating a cache if none exists
* there.
*
* @param directory a writable directory
* @param appVersion
* @param valueCount the number of values per cache entry. Must be positive.
* @param maxSize the maximum number of bytes this cache should use to store
* @throws IOException if reading or writing the cache directory fails
*/
public static DiskLruCache open(File directory, int appVersion, int valueCount, long maxSize)
throws IOException {
if (maxSize <= 0) {
throw new IllegalArgumentException("maxSize <= 0");
}
if (valueCount <= 0) {
throw new IllegalArgumentException("valueCount <= 0");
}
// prefer to pick up where we left off
DiskLruCache cache = new DiskLruCache(directory, appVersion, valueCount, maxSize);
if (cache.journalFile.exists()) {
try {
cache.readJournal();
cache.processJournal();
cache.journalWriter = new BufferedWriter(new FileWriter(cache.journalFile, true),
IO_BUFFER_SIZE);
return cache;
} catch (IOException journalIsCorrupt) {
// System.logW("DiskLruCache " + directory + " is corrupt: "
// + journalIsCorrupt.getMessage() + ", removing");
cache.delete();
}
}
// create a new empty cache
directory.mkdirs();
cache = new DiskLruCache(directory, appVersion, valueCount, maxSize);
cache.rebuildJournal();
return cache;
}
private void readJournal() throws IOException {
InputStream in = new BufferedInputStream(new FileInputStream(journalFile), IO_BUFFER_SIZE);
try {
String magic = readAsciiLine(in);
String version = readAsciiLine(in);
String appVersionString = readAsciiLine(in);
String valueCountString = readAsciiLine(in);
String blank = readAsciiLine(in);
if (!MAGIC.equals(magic)
|| !VERSION_1.equals(version)
|| !Integer.toString(appVersion).equals(appVersionString)
|| !Integer.toString(valueCount).equals(valueCountString)
|| !"".equals(blank)) {
throw new IOException("unexpected journal header: ["
+ magic + ", " + version + ", " + valueCountString + ", " + blank + "]");
}
while (true) {
try {
readJournalLine(readAsciiLine(in));
} catch (EOFException endOfJournal) {
break;
}
}
} finally {
closeQuietly(in);
}
}
private void readJournalLine(String line) throws IOException {
String[] parts = line.split(" ");
if (parts.length < 2) {
throw new IOException("unexpected journal line: " + line);
}
String key = parts[1];
if (parts[0].equals(REMOVE) && parts.length == 2) {
lruEntries.remove(key);
return;
}
Entry entry = lruEntries.get(key);
if (entry == null) {
entry = new Entry(key);
lruEntries.put(key, entry);
}
if (parts[0].equals(CLEAN) && parts.length == 2 + valueCount) {
entry.readable = true;
entry.currentEditor = null;
entry.setLengths(copyOfRange(parts, 2, parts.length));
} else if (parts[0].equals(DIRTY) && parts.length == 2) {
entry.currentEditor = new Editor(entry);
} else if (parts[0].equals(READ) && parts.length == 2) {
// this work was already done by calling lruEntries.get()
} else {
throw new IOException("unexpected journal line: " + line);
}
}
/**
* Computes the initial size and collects garbage as a part of opening the
* cache. Dirty entries are assumed to be inconsistent and will be deleted.
*/
private void processJournal() throws IOException {
deleteIfExists(journalFileTmp);
for (Iterator<Entry> i = lruEntries.values().iterator(); i.hasNext(); ) {
Entry entry = i.next();
if (entry.currentEditor == null) {
for (int t = 0; t < valueCount; t++) {
size += entry.lengths[t];
}
} else {
entry.currentEditor = null;
for (int t = 0; t < valueCount; t++) {
deleteIfExists(entry.getCleanFile(t));
deleteIfExists(entry.getDirtyFile(t));
}
i.remove();
}
}
}
/**
* Creates a new journal that omits redundant information. This replaces the
* current journal if it exists.
*/
private synchronized void rebuildJournal() throws IOException {
if (journalWriter != null) {
journalWriter.close();
}
Writer writer = new BufferedWriter(new FileWriter(journalFileTmp), IO_BUFFER_SIZE);
writer.write(MAGIC);
writer.write("\n");
writer.write(VERSION_1);
writer.write("\n");
writer.write(Integer.toString(appVersion));
writer.write("\n");
writer.write(Integer.toString(valueCount));
writer.write("\n");
writer.write("\n");
for (Entry entry : lruEntries.values()) {
if (entry.currentEditor != null) {
writer.write(DIRTY + ' ' + entry.key + '\n');
} else {
writer.write(CLEAN + ' ' + entry.key + entry.getLengths() + '\n');
}
}
writer.close();
journalFileTmp.renameTo(journalFile);
journalWriter = new BufferedWriter(new FileWriter(journalFile, true), IO_BUFFER_SIZE);
}
private static void deleteIfExists(File file) throws IOException {
// try {
// Libcore.os.remove(file.getPath());
// } catch (ErrnoException errnoException) {
// if (errnoException.errno != OsConstants.ENOENT) {
// throw errnoException.rethrowAsIOException();
// }
// }
if (file.exists() && !file.delete()) {
throw new IOException();
}
}
/**
* Returns a snapshot of the entry named {@code key}, or null if it doesn't
* exist is not currently readable. If a value is returned, it is moved to
* the head of the LRU queue.
*/
public synchronized Snapshot get(String key) throws IOException {
checkNotClosed();
validateKey(key);
Entry entry = lruEntries.get(key);
if (entry == null) {
return null;
}
if (!entry.readable) {
return null;
}
/*
* Open all streams eagerly to guarantee that we see a single published
* snapshot. If we opened streams lazily then the streams could come
* from different edits.
*/
InputStream[] ins = new InputStream[valueCount];
try {
for (int i = 0; i < valueCount; i++) {
ins[i] = new FileInputStream(entry.getCleanFile(i));
}
} catch (FileNotFoundException e) {
// a file must have been deleted manually!
return null;
}
redundantOpCount++;
journalWriter.append(READ + ' ' + key + '\n');
if (journalRebuildRequired()) {
executorService.submit(cleanupCallable);
}
return new Snapshot(key, entry.sequenceNumber, ins);
}
/**
* Returns an editor for the entry named {@code key}, or null if another
* edit is in progress.
*/
public Editor edit(String key) throws IOException {
return edit(key, ANY_SEQUENCE_NUMBER);
}
private synchronized Editor edit(String key, long expectedSequenceNumber) throws IOException {
checkNotClosed();
validateKey(key);
Entry entry = lruEntries.get(key);
if (expectedSequenceNumber != ANY_SEQUENCE_NUMBER
&& (entry == null || entry.sequenceNumber != expectedSequenceNumber)) {
return null; // snapshot is stale
}
if (entry == null) {
entry = new Entry(key);
lruEntries.put(key, entry);
} else if (entry.currentEditor != null) {
return null; // another edit is in progress
}
Editor editor = new Editor(entry);
entry.currentEditor = editor;
// flush the journal before creating files to prevent file leaks
journalWriter.write(DIRTY + ' ' + key + '\n');
journalWriter.flush();
return editor;
}
/**
* Returns the directory where this cache stores its data.
*/
public File getDirectory() {
return directory;
}
/**
* Returns the maximum number of bytes that this cache should use to store
* its data.
*/
public long maxSize() {
return maxSize;
}
/**
* Returns the number of bytes currently being used to store the values in
* this cache. This may be greater than the max size if a background
* deletion is pending.
*/
public synchronized long size() {
return size;
}
private synchronized void completeEdit(Editor editor, boolean success) throws IOException {
Entry entry = editor.entry;
if (entry.currentEditor != editor) {
throw new IllegalStateException();
}
// if this edit is creating the entry for the first time, every index must have a value
if (success && !entry.readable) {
for (int i = 0; i < valueCount; i++) {
if (!entry.getDirtyFile(i).exists()) {
editor.abort();
throw new IllegalStateException("edit didn't create file " + i);
}
}
}
for (int i = 0; i < valueCount; i++) {
File dirty = entry.getDirtyFile(i);
if (success) {
if (dirty.exists()) {
File clean = entry.getCleanFile(i);
dirty.renameTo(clean);
long oldLength = entry.lengths[i];
long newLength = clean.length();
entry.lengths[i] = newLength;
size = size - oldLength + newLength;
}
} else {
deleteIfExists(dirty);
}
}
redundantOpCount++;
entry.currentEditor = null;
if (entry.readable | success) {
entry.readable = true;
journalWriter.write(CLEAN + ' ' + entry.key + entry.getLengths() + '\n');
if (success) {
entry.sequenceNumber = nextSequenceNumber++;
}
} else {
lruEntries.remove(entry.key);
journalWriter.write(REMOVE + ' ' + entry.key + '\n');
}
if (size > maxSize || journalRebuildRequired()) {
executorService.submit(cleanupCallable);
}
}
/**
* We only rebuild the journal when it will halve the size of the journal
* and eliminate at least 2000 ops.
*/
private boolean journalRebuildRequired() {
final int REDUNDANT_OP_COMPACT_THRESHOLD = 2000;
return redundantOpCount >= REDUNDANT_OP_COMPACT_THRESHOLD
&& redundantOpCount >= lruEntries.size();
}
/**
* Drops the entry for {@code key} if it exists and can be removed. Entries
* actively being edited cannot be removed.
*
* @return true if an entry was removed.
*/
public synchronized boolean remove(String key) throws IOException {
checkNotClosed();
validateKey(key);
Entry entry = lruEntries.get(key);
if (entry == null || entry.currentEditor != null) {
return false;
}
for (int i = 0; i < valueCount; i++) {
File file = entry.getCleanFile(i);
if (!file.delete()) {
throw new IOException("failed to delete " + file);
}
size -= entry.lengths[i];
entry.lengths[i] = 0;
}
redundantOpCount++;
journalWriter.append(REMOVE + ' ' + key + '\n');
lruEntries.remove(key);
if (journalRebuildRequired()) {
executorService.submit(cleanupCallable);
}
return true;
}
/**
* Returns true if this cache has been closed.
*/
public boolean isClosed() {
return journalWriter == null;
}
private void checkNotClosed() {
if (journalWriter == null) {
throw new IllegalStateException("cache is closed");
}
}
/**
* Force buffered operations to the filesystem.
*/
public synchronized void flush() throws IOException {
checkNotClosed();
trimToSize();
journalWriter.flush();
}
/**
* Closes this cache. Stored values will remain on the filesystem.
*/
public synchronized void close() throws IOException {
if (journalWriter == null) {
return; // already closed
}
for (Entry entry : new ArrayList<Entry>(lruEntries.values())) {
if (entry.currentEditor != null) {
entry.currentEditor.abort();
}
}
trimToSize();
journalWriter.close();
journalWriter = null;
}
private void trimToSize() throws IOException {
while (size > maxSize) {
// Map.Entry<String, Entry> toEvict = lruEntries.eldest();
final Map.Entry<String, Entry> toEvict = lruEntries.entrySet().iterator().next();
remove(toEvict.getKey());
}
}
/**
* Closes the cache and deletes all of its stored values. This will delete
* all files in the cache directory including files that weren't created by
* the cache.
*/
public void delete() throws IOException {
close();
deleteContents(directory);
}
private void validateKey(String key) {
if (key.contains(" ") || key.contains("\n") || key.contains("\r")) {
throw new IllegalArgumentException(
"keys must not contain spaces or newlines: \"" + key + "\"");
}
}
private static String inputStreamToString(InputStream in) throws IOException {
return readFully(new InputStreamReader(in, UTF_8));
}
/**
* A snapshot of the values for an entry.
*/
public final class Snapshot implements Closeable {
private final String key;
private final long sequenceNumber;
private final InputStream[] ins;
private Snapshot(String key, long sequenceNumber, InputStream[] ins) {
this.key = key;
this.sequenceNumber = sequenceNumber;
this.ins = ins;
}
/**
* Returns an editor for this snapshot's entry, or null if either the
* entry has changed since this snapshot was created or if another edit
* is in progress.
*/
public Editor edit() throws IOException {
return DiskLruCache.this.edit(key, sequenceNumber);
}
/**
* Returns the unbuffered stream with the value for {@code index}.
*/
public InputStream getInputStream(int index) {
return ins[index];
}
/**
* Returns the string value for {@code index}.
*/
public String getString(int index) throws IOException {
return inputStreamToString(getInputStream(index));
}
@Override
public void close() {
for (InputStream in : ins) {
closeQuietly(in);
}
}
}
/**
* Edits the values for an entry.
*/
public final class Editor {
private final Entry entry;
private boolean hasErrors;
private Editor(Entry entry) {
this.entry = entry;
}
/**
* Returns an unbuffered input stream to read the last committed value,
* or null if no value has been committed.
*/
public InputStream newInputStream(int index) throws IOException {
synchronized (DiskLruCache.this) {
if (entry.currentEditor != this) {
throw new IllegalStateException();
}
if (!entry.readable) {
return null;
}
return new FileInputStream(entry.getCleanFile(index));
}
}
/**
* Returns the last committed value as a string, or null if no value
* has been committed.
*/
public String getString(int index) throws IOException {
InputStream in = newInputStream(index);
return in != null ? inputStreamToString(in) : null;
}
/**
* Returns a new unbuffered output stream to write the value at
* {@code index}. If the underlying output stream encounters errors
* when writing to the filesystem, this edit will be aborted when
* {@link #commit} is called. The returned output stream does not throw
* IOExceptions.
*/
public OutputStream newOutputStream(int index) throws IOException {
synchronized (DiskLruCache.this) {
if (entry.currentEditor != this) {
throw new IllegalStateException();
}
return new FaultHidingOutputStream(new FileOutputStream(entry.getDirtyFile(index)));
}
}
/**
* Sets the value at {@code index} to {@code value}.
*/
public void set(int index, String value) throws IOException {
Writer writer = null;
try {
writer = new OutputStreamWriter(newOutputStream(index), UTF_8);
writer.write(value);
} finally {
closeQuietly(writer);
}
}
/**
* Commits this edit so it is visible to readers. This releases the
* edit lock so another edit may be started on the same key.
*/
public void commit() throws IOException {
if (hasErrors) {
completeEdit(this, false);
remove(entry.key); // the previous entry is stale
} else {
completeEdit(this, true);
}
}
/**
* Aborts this edit. This releases the edit lock so another edit may be
* started on the same key.
*/
public void abort() throws IOException {
completeEdit(this, false);
}
private class FaultHidingOutputStream extends FilterOutputStream {
private FaultHidingOutputStream(OutputStream out) {
super(out);
}
@Override
public void write(int oneByte) {
try {
out.write(oneByte);
} catch (IOException e) {
hasErrors = true;
}
}
@Override
public void write(byte[] buffer, int offset, int length) {
try {
out.write(buffer, offset, length);
} catch (IOException e) {
hasErrors = true;
}
}
@Override
public void close() {
try {
out.close();
} catch (IOException e) {
hasErrors = true;
}
}
@Override
public void flush() {
try {
out.flush();
} catch (IOException e) {
hasErrors = true;
}
}
}
}
private final class Entry {
private final String key;
/**
* Lengths of this entry's files.
*/
private final long[] lengths;
/**
* True if this entry has ever been published
*/
private boolean readable;
/**
* The ongoing edit or null if this entry is not being edited.
*/
private Editor currentEditor;
/**
* The sequence number of the most recently committed edit to this entry.
*/
private long sequenceNumber;
private Entry(String key) {
this.key = key;
this.lengths = new long[valueCount];
}
public String getLengths() throws IOException {
StringBuilder result = new StringBuilder();
for (long size : lengths) {
result.append(' ').append(size);
}
return result.toString();
}
/**
* Set lengths using decimal numbers like "10123".
*/
private void setLengths(String[] strings) throws IOException {
if (strings.length != valueCount) {
throw invalidLengths(strings);
}
try {
for (int i = 0; i < strings.length; i++) {
lengths[i] = Long.parseLong(strings[i]);
}
} catch (NumberFormatException e) {
throw invalidLengths(strings);
}
}
private IOException invalidLengths(String[] strings) throws IOException {
throw new IOException("unexpected journal line: " + Arrays.toString(strings));
}
public File getCleanFile(int i) {
return new File(directory, key + "." + i);
}
public File getDirtyFile(int i) {
return new File(directory, key + "." + i + ".tmp");
}
}
}
public class EnhancedCacheInterceptor implements Interceptor {
@Override
public Response intercept(Chain chain) throws IOException {
Request request = chain.request();
Response response = chain.proceed(request);
String url = request.url().toString();
RequestBody requestBody = request.body();
Charset charset = Charset.forName("UTF-8");
StringBuilder sb = new StringBuilder();
sb.append(url);
if (request.method().equals("POST")) {
MediaType contentType = requestBody.contentType();
if (contentType != null) {
charset = contentType.charset(Charset.forName("UTF-8"));
}
Buffer buffer = new Buffer();
try {
requestBody.writeTo(buffer);
} catch (IOException e) {
e.printStackTrace();
}
sb.append(buffer.readString(charset));
buffer.close();
}
Log.d(CacheManager.TAG, "EnhancedCacheInterceptor -> key:" + sb.toString());
ResponseBody responseBody = response.body();
MediaType contentType = responseBody.contentType();
BufferedSource source = responseBody.source();
source.request(Long.MAX_VALUE);
Buffer buffer = source.buffer();
if (contentType != null) {
charset = contentType.charset(Charset.forName("UTF-8"));
}
String key = sb.toString();
String json = buffer.clone().readString(charset);
CacheManager.getInstance().putCache(key, json);
Log.d(CacheManager.TAG, "put cache-> key:" + key + "-> json:" + json);
return chain.proceed(request);
}
}
public class EnhancedCall<T> {
private Call<T> mCall;
private Class dataClassName;
// 是否使用缓存 默认开启
private boolean mUseCache = true;
public EnhancedCall(Call<T> call) {
this.mCall = call;
}
/**
* Gson反序列化缓存时 需要获取到泛型的class类型
*/
public EnhancedCall<T> dataClassName(Class className) {
dataClassName = className;
return this;
}
/**
* 是否使用缓存 默认使用
*/
public EnhancedCall<T> useCache(boolean useCache) {
mUseCache = useCache;
return this;
}
public void enqueue(final EnhancedCallback<T> enhancedCallback) {
mCall.enqueue(new Callback<T>() {
@Override
public void onResponse(Call<T> call, Response<T> response) {
enhancedCallback.onResponse(call, response);
}
@Override
public void onFailure(Call<T> call, Throwable t) {
if (!mUseCache || NetWorkUtil.isNetAvailable(SUtils.getApp())) {
//不使用缓存 或者网络可用 的情况下直接回调onFailure
enhancedCallback.onFailure(call, t);
return;
}
Request request = call.request();
String url = request.url().toString();
RequestBody requestBody = request.body();
Charset charset = Charset.forName("UTF-8");
StringBuilder sb = new StringBuilder();
sb.append(url);
if (request.method().equals("POST")) {
MediaType contentType = requestBody.contentType();
if (contentType != null) {
charset = contentType.charset(Charset.forName("UTF-8"));
}
Buffer buffer = new Buffer();
try {
requestBody.writeTo(buffer);
} catch (IOException e) {
e.printStackTrace();
}
sb.append(buffer.readString(charset));
buffer.close();
}
String cache = CacheManager.getInstance().getCache(sb.toString());
Log.d(CacheManager.TAG, "get cache->" + cache);
if (!TextUtils.isEmpty(cache) && dataClassName != null) {
Object obj = new Gson().fromJson(cache, dataClassName);
if (obj != null) {
enhancedCallback.onGetCache((T) obj);
return;
}
}
enhancedCallback.onFailure(call, t);
Log.d(CacheManager.TAG, "onFailure->" + t.getMessage());
}
});
}
}
public interface EnhancedCallback<T> {
void onResponse(Call<T> call, Response<T> response);
void onFailure(Call<T> call, Throwable t);
void onGetCache(T t);
}
public class NetWorkUtil {
public static boolean isNetAvailable(Context context) {
ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo info = manager.getActiveNetworkInfo();
return info != null && info.isAvailable();
}
}
//这里需要一个Appliction类，并在manifest.xml中引用
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<application
android:name=".modle.App"
public class App extends Application {
public static final List<YSQHomeBean.DataBean.ArtcircleListBean.ListBean> ysqHomeBeans = new ArrayList<>();
@Override
public void onCreate() {
super.onCreate();
SUtils.initialize(this);
}
//等同于 SUtils.getApp();
public Context getApp(){
return getApplicationContext();
}
}