小编kla*_*mse的帖子

我在我的项目中得到“java：package org.junit 不存在”，这让我发疯。我有 JUnit 作为外部库，但它仍然无法识别。我正在尝试在 IntelliJ Idea 中设置一个简单的“Hello World”应用程序。

这是我的pom：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.springapp</groupId>
    <artifactId>untitled</artifactId>
    <packaging>war</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>untitled</name>

    <properties>
        <spring.version>4.1.1.RELEASE</spring.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
        </dependency>

        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.1</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <finalName>untitled</finalName>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-surefire-plugin</artifactId>
                <configuration>
                    <includes>
                        <include>**/*Tests.java</include>
                    </includes> …

所以我想一次从stdin读一个字节。while循环的每次迭代都试图重新分配缓冲区，但是我不想使用realloc。这是我尝试过的：

   char tempChar = '\0';
   char *buffer;
   int bufferSize = 0;


   buffer = (char*) malloc(sizeof(char));
   while((tempChar = getc(stdin)) != EOF)
   {
      buffer[bufferSize] = tempChar;
      bufferSize++;

      char *temp = buffer;
      buffer = (char*)malloc(sizeof(char)*bufferSize);
      memcpy(buffer, temp, sizeof(temp));
      free(temp);
   }
   buffer[bufferSize] = '\0';

我遇到了细分错误。知道为什么会这样吗？

编辑：好的，就像其他人所说的，我修复了两个错误。这是固定版本：

  char tempChar = '\0';
  char *buffer;
  int bufferSize = 1;
  int count = 0; 
  buffer = malloc(sizeof(char));

  while((tempChar = getc(stdin)) != EOF){
    buffer[count] = tempChar;
    count++;

    if(count >= bufferSize){
      bufferSize *= 2;
      char *temp = buffer;
      buffer = …