1. Concept Based on the memory, the data in the disk file is read into the memory in byte form. 2. Constructor public FileInputStream(File file) public FileInputStream(String pathname) Both of these create a byte input stream pipeline and connect it to the source file. Three. Methods public int read(): Returns one byte each time it […]
Tag: inputstream
Java gets network pictures and reads InputStream
Table of Contents Save money: Deprecated methods: Recommended writing method: Original writing: Modern writing: Compared: Saving flow: Commonly used (verified, safe for production and consumption): try (CloseableHttpClient httpClient = HttpClientBuilder.create().build()) { HttpGet httpGet = new HttpGet(path); CloseableHttpResponse resp = httpClient.execute(httpGet); // Call the server interface byte[] data = EntityUtils.toByteArray(resp.getEntity()); // Convert the returned image or […]
Byte stream InputStream/OutputStream
Byte stream InputStream/OutputStream This article will give a brief summary of the byte stream InputStream/OutputStream in the JAVA I/O stream: In general, each byte stream class has a corresponding purpose, as follows: ByteArrayInputStream/ByteArrayOutputStream //Byte array related FileInputStream/FileOutputStream //File operation related PipedOutputStream/PipedInputStream //Inter-thread communication (pipeline) BufferedInputStream/BufferedOutputStream //Decorate other byte streams and add buffering function FilterInputStream/FilterOutputStream //Decorate […]
File byte input stream (FileInputStream) (basic stream, original stream)
IO streams are also called input and output streams. It is used to read and write data. I means I stands for input. The process of reading data from hard disk files tomemory is called input and is responsible for reading. O means O stands for output, which is the process of writing the data […]
Java-Object processing streams ObjectOutputStream and ObjectInputStream (serialization and deserialization)
Java-Object processing streams ObjectOutputStream and ObjectInputStream (serialization and deserialization) Refers to serialization and deserialization operations on basic data types or objects; Serialization When saving data, save the value and data type of the data; Serialized into byte stream; Deserialization When restoring data, restore the value and data type of the data; Deserialization of byte streams […]
Classification of IO streams in Java, byte stream and character stream, node stream and processing stream overview, FileInputStream, FileOutputStream, FireReader, FireWriter, BufferReader code
Classification of IO streams According to the different operation data units, it is divided into: byte stream and character stream According to the flow direction of the data flow, it is divided into: input flow and output flow According to the role of the flow, it is divided into: node flow and processing flow (packaging […]
[Byte stream (InputStream) (OutputStream) in IO stream]
Character set Americans invented the computer To save their characters into the computer (English letters, numbers, punctuation, special characters) The characters are numbered to form an ASCII code table (American Standard Code for Information Interchange), which contains a total of 128 characters. This code table stores 1 character in 1 byte, and the first bit […]
[java] The pit of ZipInputStream and ZipFile
Article directory This series of school motto reason Go to AI Let AI analyze errors Manual guidance to correct direction Completely solve the problem of ZIP package Summary: What kind of pit is this? suggestion This series of school motto Use the free public video to fly to the training class! If you are beaten […]
springboot handles request.getInputStream() input stream can only read once
1. Requirements A recent requirement encountered at work is to collect the client type, operating system type, ip, port, request method, URI, and request parameter values in the request into the log. I found information on the Internet and said to use an interceptor to intercept all requests and then Gather information, and then start […]
[JavaSE column 74] byte input stream InputStream, a stream for reading byte data from the input source
Author Homepage: Designer Xiaozheng About the author: 3 years of JAVA full-stack development experience, focusing on JAVA technology, system customization, remote guidance, dedicated to enterprise digital transformation, certified lecturer of CSDN College and Blue Bridge Cloud Course. Main direction: Vue, SpringBoot, WeChat applet This article explains the byte input stream InputStream in Java, introduces the […]