在 try catch 块后继续执行

Question

我想显示“成功保存”消息，然后想继续下一个 try-catch 块。 我试过'finally'，但它说'控制不能离开finally 块的主体'。 以下是我的代码。

try
{
    //some code

    return ok(new{Message="Successfully saved"});

    try
    {
        //some code
        //return ok(new{Message="Successfully created site"});
    }
    catch(Exception ex)
    {
        //return ok(new {Message="failed to create site"});
    }
}
catch(Exception ex)
{
//return ok(new {Message="failed to save"});
}

谁能帮帮我吗？

Answer 1

为什么不先将结果存储到变量中？

private WhatEverType MyMethod()
{
    WhatEverType result = default(WhatEverType);
    try
    {
        //some code

        result = ok(new{Message="Successfully saved"});

        try
        {
            //some code
            result = ok(new{Message="Successfully created site"});
        }
        catch(Exception ex)
        {
            result = ok(new {Message="failed to create site"});
        }
    }
    catch(Exception ex)
    {
        result = ok(new {Message="failed to save"});
    }
    return result;
}

Answer 2

您正在从第一个 try 块返回，因此您的代码不会在其他 try-catch 块中进一步执行。 我建议将返回消息值存储/附加在字符串中（而不是返回本身），并最终在 finally 块中显示成功（或错误）的内容。

Answer 3

public return-type method()
{
    var-type varResult;
    var-type varResult1;

    try
    {
        // code
        varResult = successfully saved

        try
        {
            //code
            varResult = unsuccessfully saved
        }
        catch(Exception ex)
        {
            varResult = successfully saved
        }
    }
    catch(Exception ex)
    {
        result = varResult = unsuccessfully saved
    }
    finally
    {
        varResult1 = success
    }

    return varResult1
}

这里 varResult 根据代码流返回它取决于在 try 或 catch 块中输入的代码

但是无论在 try 或 catch 块中输入的代码如何，varResult1 都返回成功

Answer 4

为什么不return但最后：

try
{
    //some code

    //DONE: no return here - we're not ready to return, but want to continue

    try
    {
        // some code
        //DONE: no return here - we're not ready to return, but want to continue
    }
    catch (Exception ex) //TODO: do not catch Exception, but more specific exception
    {
        return ok(new {Message="failed to create site"});
    }
}
catch (Exception ex) //TODO: do not catch Exception, but more specific exception
{
     return ok(new {Message="failed to save"});
}

//  but here
return ok(new{Message="Successfully saved;Successfully created site"});

Answer 5

return 语句是什么让你搞砸了。 它会将您带出正在执行的函数，然后返回。 finally 子句将始终在 try-catch 块（通常用于清理）之后执行，但由于您在 try 中有返回，因此您永远不会在执行中退出该子句。 您可以使用单个 try-catch，然后根据在 catch 块中捕获的异常生成一条消息。 对于您的消息，它不是非常必要的，因为 catch 块会根据异常告诉您哪里出错了，而到达返回值会告诉您一切正常。