\u9019\u662f\u4e00\u7bc7\u5099\u4efd\u7684\u6587\u7ae0\uff0c\u9810\u9632\u4e4b\u5f8c\u6d88\u5931\uff0c\u4f86\u6e90\u662f
\nhttp:\/\/jnkjava.blogspot.tw\/2013\/06\/parsing-cc-struct-in-java.html<\/p>\n
<\/p>\n
enum Gender { MALE, FEMALE };<\/code>
\nstruct msg {<\/code>
\n\u00a0 #ifdef INTEL_STYLE<\/code>
\n\u00a0 \u00a0 \u00a0 UCHAR spare4:4;<\/code>
\n\u00a0 \u00a0 \u00a0 UCHAR octal:3;<\/code>
\n\u00a0 \u00a0 \u00a0 UCHAR bool:1;<\/code>
\n\u00a0 #else<\/code>
\n\u00a0 \u00a0 \u00a0 UCHAR bool:1;<\/code>
\n\u00a0 \u00a0 \u00a0 UCHAR octal:3;<\/code>
\n\u00a0 \u00a0 \u00a0 UCHAR spare4:4;<\/code>
\n\u00a0 #endif<\/code>
\n\u00a0 UINT uint; \u00a0<\/code>
\n\u00a0 char str[5];
\nfloat flt;<\/code>
\n\u00a0 enum Gender gender;
\n}<\/code><\/div>\nIf your C\/C++ application runs on an INTEL (x86) based machine architecture, then you receive the bits as little\u00a0endian<\/a>\u00a0(see INTEL_STYLE above), otherwise as big\u00a0endian<\/a>\u00a0(e.g. SPARC machines). Note that the JVM is big\u00a0endian<\/a>, too. In the following we assume a\u00a0big-endian<\/a>\u00a0architecture.
\nIn this blog entry we are going to see how you can parse such a message in your receiving Java application.<\/div>\nWhat will you need?<\/h3>\n\n\n- the\u00a0javolution<\/a>\u00a0library to parse the C\/C++ struct in Java<\/li>\n
- a calculator that handles binaries, hexadecimals and decimals (Windows, Linux and MacOSX already provide such calculators. However, they don't handle decimal point numbers, so this\u00a0online converter<\/a>\u00a0will prove useful, too).<\/li>\n<\/ul>\nThe following table shows how the C\/C++ data types correspond to Javolution\u00a0Struct<\/a>.<\/div>\n<\/div>\n\n