我有一個移動應用程式，它的其余 Api 是使用 eclipse 在 Jakarta EE 中撰寫的，資料庫是一個 oracle，當然，我們將 war 檔案上傳到 apache 服務器以進行實時應用程式，我們為此使用的 apache 服務器版本是 tomcat阿帕奇 v8.5。當我們在使用本地服務器時通過應用程式插入資料時，阿拉伯文本可以正常作業并正確顯示在 oracle 中。但是當我們上傳戰爭檔案并通過 tomcat apache 使用實時應用程式時，阿拉伯文本不起作用。我使用了幾個選項，但沒有得到正確的結果。我還嘗試在 server.xml 檔案中的連接器內設定 URIEncoding="UTF-8"，但它不起作用。
<?xml version="1.0" encoding="UTF-8"?>
<!--
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
--><!-- Note: A "Server" is not itself a "Container", so you may not
define subcomponents such as "Valves" at this level.
Documentation at /docs/config/server.html
--><Server port="8005" shutdown="SHUTDOWN">
<Listener className="org.apache.catalina.startup.VersionLoggerListener"/>
<Listener SSLEngine="on" className="org.apache.catalina.core.AprLifecycleListener"/>
<!-- Prevent memory leaks due to use of particular java/javax APIs-->
<Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener"/>
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"/>
<Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener"/>
<GlobalNamingResources>
<Resource auth="Container" description="User database that can be updated and saved" factory="org.apache.catalina.users.MemoryUserDatabaseFactory" name="UserDatabase" pathname="conf/tomcat-users.xml" type="org.apache.catalina.UserDatabase"/>
</GlobalNamingResources>
<Service name="Catalina">
<Connector connectionTimeout="20000" port="8080" maxHttpHeaderSize="65536" protocol="HTTP/1.1" redirectPort="8443" URIEncoding="UTF-8"/>
<Connector port="8009" protocol="AJP/1.3" redirectPort="8443"/>
<Engine defaultHost="localhost" name="Catalina">
<Realm className="org.apache.catalina.realm.LockOutRealm">
<Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/>
</Realm>
<Host appBase="webapps" autoDeploy="true" name="localhost" unpackWARs="true">
<Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" pattern="%h %l %u %t "%r" %s %b" prefix="localhost_access_log" suffix=".txt"/>
<Context docBase="JobVisit" path="/JobVisit" reloadable="true" source="org.eclipse.jst.jee.server:JobVisit"/></Host>
</Engine>
</Service>
</Server>
但是當我嘗試在 Eclipse 中將我的字串轉換為 UTF-8 時，它會以某種方式作業，但由于“?”顯示為“??”，因此某些字母無法正確顯示。
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;
import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import org.codehaus.jettison.json.JSONArray;
import org.codehaus.jettison.json.JSONException;
import org.codehaus.jettison.json.JSONObject;
import com.google.gson.Gson;
import com.rest.database.DBConnection;
@Path("/arabicTest")
public class MaintenanceRequestRegistrationTest {
@SuppressWarnings({ "unchecked" })
@POST
@Path("arabic")
@Produces("application/json")
@Consumes("application/json")
public String crunchifycreateKCM(InputStream incomingData) throws JSONException {
Connection dbConnection = null;
Statement stmt = null;
// JSONArray myArray = new JSONArray();
JSONObject jsarr = new JSONObject();
try {
// con.setAutoCommit(false);
dbConnection = DBConnection.getDBConnection();
dbConnection.setAutoCommit(false);
stmt = (Statement) dbConnection.createStatement();
// System.out.println("Iam entering try catch bloxck");
new Gson();
InputStream in = incomingData;
String a = convertStreamToString(in);
// System.out.println(a);
JSONObject json = new JSONObject(a);
JSONArray kcm = json.getJSONArray("createkcm");
// System.out.println("length of json data" kcm.length());
// updating kcmd data
JSONObject jo = kcm.getJSONObject(0);
String cmremarks = jo.getString("cmremarks");
cmremarks = new String(cmremarks.getBytes(),"UTF-8");
String sqlQuery3 = "insert into test(COL1) values('" cmremarks "')";
int count = stmt.executeUpdate(sqlQuery3);
if(count>0) {
jsarr.put("status", "200");
}else {
jsarr.put("status", "100");
}
dbConnection.commit();
} catch (Exception e) {
e.printStackTrace();
} finally {
// db connection close 16-Nov
try {
if (stmt != null)
stmt.close();
if (dbConnection != null)
dbConnection.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
// return HTTP response 200 in case of success
// return Response.status(200).entity(ret.toString()).build();
System.out.print(jsarr.toString());
return jsarr.toString();
}
private String convertStreamToString(InputStream is) {
/*
* To convert the InputStream to String we use the BufferedReader.readLine()
* method. We iterate until the BufferedReader return null which means there's
* no more data to read. Each line will appended to a StringBuilder and returned
* as String.
*/
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line = null;
try {
while ((line = reader.readLine()) != null) {
sb.append(line "\n");
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return sb.toString();
}
}
so please can anyone guide me how to solve this, i also attached my server.xml and java class rest Api code
uj5u.com熱心網友回復：
我按照@PiotrP.Karwasz 的建議使用了兩個引數的 InputStreamReader 建構式，它可以作業
private String convertStreamToString(InputStream is) {
/*
* To convert the InputStream to String we use the BufferedReader.readLine()
* method. We iterate until the BufferedReader return null which means there's
* no more data to read. Each line will appended to a StringBuilder and returned
* as String.
*/
BufferedReader reader = new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8));
StringBuilder sb = new StringBuilder();
String line = null;
try {
while ((line = reader.readLine()) != null) {
sb.append(line "\n");
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return sb.toString();
}
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