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java示例修改成正确代码

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韩帅 2022-10-18 10:10:47 +08:00
parent c5c24655eb
commit d6ba002a2e
1 changed files with 18 additions and 16 deletions
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24
binding/java/ReadMe.md
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@ -14,8 +14,7 @@
### 完全基于文件的查询
```java
import org.lionsoul.ip2region.xdb.Searcher;
import java.io.*;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
public class SearcherTest {
@ -30,9 +29,9 @@ public class SearcherTest {
return;
}
String ip = "1.2.3.4";
// 2、查询
try {
String ip = "1.2.3.4";
long sTime = System.nanoTime();
String region = searcher.search(ip);
long cost = TimeUnit.NANOSECONDS.toMicros((long) (System.nanoTime() - sTime));
@ -42,7 +41,11 @@ public class SearcherTest {
}
// 3、关闭资源
try {
searcher.close();
} catch (IOException e) {
throw new RuntimeException(e);
}
// 备注：并发使用，每个线程需要创建一个独立的 searcher 对象单独使用。
}
@ -53,8 +56,7 @@ public class SearcherTest {
我们可以提前从 `xdb` 文件中加载出来 `VectorIndex` 数据，然后全局缓存，每次创建 Searcher 对象的时候使用全局的 VectorIndex 缓存可以减少一次固定的 IO 操作，从而加速查询，减少 IO 压力。
```java
import org.lionsoul.ip2region.xdb.Searcher;
import java.io.*;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
public class SearcherTest {
@ -78,10 +80,9 @@ public class SearcherTest {
System.out.printf("failed to create vectorIndex cached searcher with `%s`: %s\n", dbPath, e);
return;
}
String ip = "1.2.3.4";
// 3、查询
try {
String ip = "1.2.3.4";
long sTime = System.nanoTime();
String region = searcher.search(ip);
long cost = TimeUnit.NANOSECONDS.toMicros((long) (System.nanoTime() - sTime));
@ -91,7 +92,11 @@ public class SearcherTest {
}
// 4、关闭资源
try {
searcher.close();
} catch (IOException e) {
throw new RuntimeException(e);
}
// 备注：每个线程需要单独创建一个独立的 Searcher 对象，但是都共享全局的制度 vIndex 缓存。
}
@ -102,8 +107,6 @@ public class SearcherTest {
我们也可以预先加载整个 ip2region.xdb 的数据到内存，然后基于这个数据创建查询对象来实现完全基于文件的查询，类似之前的 memory search。
```java
import org.lionsoul.ip2region.xdb.Searcher;
import java.io.*;
import java.util.concurrent.TimeUnit;
public class SearcherTest {
@ -127,10 +130,9 @@ public class SearcherTest {
System.out.printf("failed to create content cached searcher: %s\n", e);
return;
}
String ip = "1.2.3.4";
// 3、查询
try {
String ip = "1.2.3.4";
long sTime = System.nanoTime();
String region = searcher.search(ip);
long cost = TimeUnit.NANOSECONDS.toMicros((long) (System.nanoTime() - sTime));