构建后读取文本文件的问题

Question

我在 Unity3D 中读取文本文件时遇到问题。我创建了一个 returns 类型为 float[][] 并将流阅读器作为参数的方法：

public float[][] CreateWeights(StreamReader reader){
    int n = 0;
    float[][] Weights = new float[50][];

    while((!reader.EndOfStream)){
        string text = reader.ReadLine();
            if (text == null)
            break;

        string[] strFloats = text.Split (new char[0]);
        float[] floats = new float[strFloats.Length];
        for(int i = 0; i<strFloats.Length; i++){
            floats[i] = float.Parse(strFloats[i]);

        }
        Weights[n] = floats;
        n++;
    }
    return Weights;
}

我在 void Start() 中使用这个方法来创建 "weights":

float[][] WeightsIH; 
float[][] WeightsHO;

void Start(){

    FileInfo theSourceFile = new FileInfo(Application.dataPath + "/Resources/WeightsIH.txt");
    StreamReader reader = theSourceFile.OpenText();

    FileInfo theSourceFile2 = new FileInfo(Application.dataPath + "/Resources/WeightsHO.txt");
    StreamReader reader2 = theSourceFile2.OpenText();

    WeightsIH = CreateWeights(reader);
    WeightsHO = CreateWeights(reader2);

    Yhidden = new float[50][];
    HiddenOutput = new float[50][];
    Xoutput = new float[1];

}

这在 Unity 的播放模式下会很好地工作。但是，在创建可执行文件后，将找不到这些文件，我明白这一点。所以为了让它工作，我知道我需要使用 Resources.Load 并且我有：

void Start(){

    TextAsset text1 = Resources.Load("WeightsIH") as TextAsset;
    TextAsset text2 = Resources.Load("WeightsHO") as TextAsset;

    WeightsIH = CreateWeights(text1);
    WeightsHO = CreateWeights(text2);

    Yhidden = new float[50][];
    HiddenOutput = new float[50][];
    Xoutput = new float[1];

}

当然参数类型不能再是streamReader了，我改成了TextAsset作为参数。这是它的变化：

public float[][] CreateWeights(TextAsset textAsset){

    float[][] Weights = new float[50][];

    string[] linesFromFile = textAsset.text.Split("\n"[0]);

    for(int i = 0; i<linesFromFile.Length; i++){

        string[] strFloats = linesFromFile[i].Split (new char[0]);
        float[] floats = new float[strFloats.Length];
        for(int j = 0; j<strFloats.Length; j++){
            floats[j] = float.Parse(strFloats[j]);

        }
        Weights[i] = floats;

    }
    return Weights;
}

现在这根本行不通，甚至在播放模式下也不行。我得到的运行-time 错误如下：

FormatException: Invalid format.

System.Double.Parse (System.String s, NumberStyles style, IFormatProvider provider) (
at /Users/builduser/buildslave/mono-runtime-and-classlibs/build/mcs/class/corlib/System/Double.cs:209) System.Single.Parse (System.String s) (
at /Users/builduser/buildslave/mono-runtime-and-classlibs/build/mcs/class/corlib/System/Single.cs:183) FollowShortestPath.CreateWeights (UnityEngine.TextAsset textAsset) (
at Assets/Scripts/Pathfinding/FollowShortestPath.cs:203) FollowShortestPath.Start () (
at Assets/Scripts/Pathfinding/FollowShortestPath.cs:54)

第54行指的是：

WeightsIH = CreateWeights(text1);

第203行是指：

floats[j] = float.Parse(strFloats[j]);

我做错了什么？如何在可执行文件中成功读取文本文件？

Answer 1

您遇到的问题是您正在加载的文本文件格式。

因为你有很多空格

string[] strFloats = text.Split (new char[0]);

会导致一些字符串为空。

要解决此问题，请从文本文件中删除多余的空格或使用：

for(int j = 0; j<strFloats.Length; j++){
            if (string.IsNullOrEmpty (strFloats [j]))
                continue;

            floats[j] = float.Parse(strFloats[j]);

        }

构建后读取文本文件的问题

Troubles with reading text file after Build

c#

executable

streamreader

unity3d