@Override
public String updateJson(String key, String field, long num, long limit) {
String script = "local t = redis.call('get', KEYS[1]);\n" +
"local j;\n" +
"if t then j = cjson.decode(t); else j = cjson.decode(\"{}\"); end;\n" +
"local n;\n" +
"if j[ARGV[3]] then n = tonumber(j[ARGV[3]]); else n = 0 end;\n" +
"local r = n + tonumber(ARGV[1]);\n" +
"local limit = tonumber(ARGV[2]);\n" +
"if r >= 0 and (limit < 0 or r <= limit) then j[ARGV[3]] = r; " +
"redis.call('set', KEYS[1], cjson.encode(j)); end;\n" +
"j[ARGV[3]] = r;" +
"return cjson.encode(j);";
RScript rscript = redissonClient.getScript();
return rscript.eval(RScript.Mode.READ_WRITE, script, RScript.ReturnType.VALUE,
Collections.singletonList(key), num, limit, field);
}
@Override
public String hUpdateJson(String key, String uid, String field, long num, long limit) {
String script = "local t = redis.call('hget', KEYS[1], ARGV[4]);\n" +
"local j;\n" +
"if t then j = cjson.decode(t); else j = cjson.decode(\"{}\"); end;\n" +
"local n;\n" +
"if j[ARGV[3]] then n = tonumber(j[ARGV[3]]); else n = 0 end;\n" +
"local r = n + tonumber(ARGV[1]);\n" +
"local limit = tonumber(ARGV[2]);\n" +
"if r >= 0 and (limit < 0 or r <= limit) then j[ARGV[3]] = r; " +
"redis.call('hset', KEYS[1], ARGV[4], cjson.encode(j)); end;\n" +
"j[ARGV[3]] = r;" +
"return cjson.encode(j);";
RScript rscript = redissonClient.getScript();
return rscript.eval(RScript.Mode.READ_WRITE, script, RScript.ReturnType.VALUE,
Collections.singletonList(key), num, limit, field, uid);
}
返回值：整个json数据，（注意：即使更新失败也会返回失败后的值，用于对当前情况的判断）
标签：redisson,String,ARGV,lua,json,limit,单个,tonumber,local From： https://www.cnblogs.com/math-and-it/p/17516729.html