我有一个简单的客户端服务器程序.服务器可以接受多个客户端的连接.目前这是我的客户端发生的事情.
1)在客户端输入LIST.服务器将当前目录中的所有文件发送回客户端.2)在客户端输入"Hello".服务器应该发回"你好".但是,在客户端中,客户端读取空白.
我在客户端输入"QUIT".我只从服务器上看到Hello msg.
我无法弄清楚为什么客户端在服务器发回Hello消息后不会读取它.
客户代码
import java.net.*; // Contains Socket classes
import java.io.*; // Contains Input/Output classes
import java.nio.CharBuffer;
class ClntpracticeSandbox{
public static void main(String argv[]){
try{
//
Socket client=new Socket("localhost", 7777);
System.out.println("Connected to server " + client.getInetAddress()
+ ": " + client.getPort());
System.out.println("local port is " + client.getLocalPort());
BufferedReader kbreader;
BufferedWriter writer;
BufferedReader reader;
kbreader = new BufferedReader(new InputStreamReader(System.in));
writer = new BufferedWriter(new OutputStreamWriter(client.getOutputStream()));
reader = new BufferedReader(new InputStreamReader(client.getInputStream()));
String data = "", datakb, line=null;
do{
System.out.print("Text to …我正在构建一个MVC3 Web应用程序,我正在使用knockoutjs.应用程序中有两个视图.SetUpNewCompany和ManageAccount.要设置新公司,用户首先输入帐号并单击搜索.如果帐号已存在,则用户可以单击按钮转到ManageAccount视图.在SetUpNewCompanyController中,我使用RedirectToAction方法重定向.但是,执行ManageAccount中的Index2操作时,不会显示视图.如果我输入完整的URL,则会显示视图.
SetUpNewCompanyController.cs
[HttpPost]
public RedirectToRouteResult RedirectToManageAccount(string accountNumber)
{
return RedirectToAction("Index2", new RouteValueDictionary(new {controller=
"ManageAccount", companyId = "7e96b930-a786-44dd-8576-052ce608e38f" }));
}
单击按钮时,上面的功能会调用上面的功能
self.redirectToManageAccount = function () {
var accountNumber = "7e96b930-a786-44dd-8576-052ce608e38f";
$.ajax({
type: "POST",
url: "/SetUpNewCompany/RedirectToManageAccount",
data: { accountNumber: accountNumber },
success: function (data) {
},
error: function () {
}
});
}
ManageAccountController.cs
public ActionResult Index2(String companyId)
{
var viewModel = new Models.Index();
List<String> compList = new List<String>();
compList.Add("MyCompany");
List<String> usersList = new List<String>();
usersList.Add("User1");
viewModel.Users = usersList;
viewModel.Companies = …我正在尝试使用 axios 从我的 express 应用程序调用另一个服务（也尝试过 node-fetch）
因此，当我使用 curl、soapui 或 swagger 调用该服务时，它可以工作。
curl -X PUT --header 'Content-Type: application/json' --header 'Accept: application/json' -d '"02"' 'http://example.com/api/v1/something'
但是当我尝试使用
axios.put('http://example.com/api/v1/something', '"03"')
.then((response) => {
res.sendStatus(200);
})
.catch((error) => {
console.log(error);
res.sendStatus(500);
});
我收到“请求失败，状态码为 415”
我有一个返回以下json的Web服务
{
"1": 1.654764367578323,
"3": 1.654764367578323,
"4": 1.654764367578323,
"6": 1.654764367578323,
"12": 1.13901127184207
}
此外,可能有10或15或24如下.所以我需要检查以下名称是否在json字符串1,3,4,6,10,15,24中
{
"1": 1.654764367578323,
"3": 1.654764367578323,
"4": 1.654764367578323,
"6": 1.654764367578323,
"10": 1.13901127184207
}
我想反序列化上面的json所以我试过了
dynamic d = JsonConvert.DeserializeObject(jsonstring);
但我不能做d.1并获得值1.654764367578323.
然而,在手表中,我得到"期待结束"
我添加了一个闪屏，https://medium.com/handlebar-labs/how-to-add-a-splash-screen-to-a-react-native-app-ios-and-android-30a3cec835ae，到AwesomeProject 入门示例 ( https://facebook.github.io/react-native/docs/getting-started.html )。
我连接了我的 nexus 6p 并运行了 react-native run-android 并且我收到了这个错误
This build could be faster, please consider using the Gradle Daemon: https://docs.gradle.org/2.14.1/userguide/gradle_daemon.html
Running /home/Android/Sdk/platform-tools/adb -s 84B7N15A10013562 reverse tcp:8081 tcp:8081
Starting the app on 84B7N15A10013562 (/home/Android/Sdk/platform-tools/adb -s 84B7N15A10013562 shell am start -n com.testprj1/.MainActivity)...
Starting: Intent { cmp=com.testprj1/.MainActivity }
java.lang.SecurityException: Permission Denial: starting Intent { flg=0x10000000 cmp=com.testprj1/.MainActivity } from null (pid=23823, uid=2000) not exported from uid 10161
at android.os.Parcel.readException(Parcel.java:1684)
at android.os.Parcel.readException(Parcel.java:1637)
at android.app.ActivityManagerProxy.startActivityAsUser(ActivityManagerNative.java:3137)
at com.android.commands.am.Am.runStart(Am.java:643)
at com.android.commands.am.Am.onRun(Am.java:394)
at …我在Oracle 10g数据库中的一个名为TEST的oracle包中有一个函数
FUNCTION GetEname(P_ename IN VARCHAR2) RETURN VARCHAR2 AS
retVal VARCHAR2(10);
BEGIN
retVal := SUBSTR(P_ename, 3, INSTR(P_ename, ':', 1, 2) - 3);
RETURN RetVal;
END GetEntDefIEIDFromEname;
我创建了一个ASP.net页面,我在page_load中有以下代码:
String strResult = "";
try
{
oracleConn.ConnectionString = ConfigurationManager.ConnectionStrings["OracleDatabase"].ConnectionString;
oracleConn.Open();
OracleCommand orclCmnd = new OracleCommand();
orclCmnd.Connection = oracleConn;
orclCmnd.CommandText = "TEST.GetEname";
orclCmnd.CommandType = CommandType.StoredProcedure;
OracleParameter ename = new OracleParameter();
ename.ParameterName = "ename";
ename.OracleType = OracleType.VarChar;
ename.Direction = ParameterDirection.Input;
ename.Value = "0:490330";
orclCmnd.Parameters.Add(ename);
strResult = (String)orclCmnd.ExecuteOracleScalar();
oracleConn.Close();
oracleConn.Dispose();
lbl1.Text = "Result of " + …我有一个名为datetest的表
CREATE TABLE "DATETEST"."DATETEST"
("FNAME" VARCHAR2(20 BYTE),
"DOB" DATE,
"STAFFNO" NUMBER NOT NULL ENABLE,
CONSTRAINT "DATETEST_PK" PRIMARY KEY ("STAFFNO"));
以下数据
INSERT INTO "DATETEST"."DATETEST" (FNAME, DOB, STAFFNO) VALUES ('John', TO_DATE('01- OCT-45', 'DD-MON-RR'), '1')
INSERT INTO "DATETEST"."DATETEST" (FNAME, DOB, STAFFNO) VALUES ('Ann', TO_DATE('01-NOV-60', 'DD-MON-RR'), '2')
INSERT INTO "DATETEST"."DATETEST" (FNAME, DOB, STAFFNO) VALUES ('David', TO_DATE('24-MAR-58', 'DD-MON-RR'), '3')
INSERT INTO "DATETEST"."DATETEST" (FNAME, DOB, STAFFNO) VALUES ('Mary', TO_DATE('19-FEB-70', 'DD-MON-RR'), '4')
INSERT INTO "DATETEST"."DATETEST" (FNAME, DOB, STAFFNO) VALUES ('Susan', TO_DATE('03-JUN-40', 'DD-MON-RR'), '5')
INSERT INTO "DATETEST"."DATETEST" (FNAME, …我有一份清单 List<TestObj> testList
class TestObj
{
public int type;
public string phase;
}
1 Phase1
1 Phase1
2 Phase1
2 Phase2
我想了解具体的类型和阶段.所以我尝试了这个
var count = testList.Count(x=> x.type == 1 && x.phase.Equals("Phase1"));
我得到零.